Stabilizing an electromagnetic radiation (1) of an optical oscillator (3), in particular of a laser (13), includes measuring a deviation (35, 37, 43) between the electromagnetic radiation (1) of the optical oscillator (3) and a reference (21, 23, 39, 41) and generating a first deviation signal (35, 37, 43), controlling a first controller (55) with the first deviation signal (35, 37, 43), setting the first deviation signal (35, 37, 43, 38) by controlling at least a first manipulated variable (5, 7, 89) of at least two manipulated variables (5, 7, 89), the first manipulated variable (5, 7, 89) being controlled by a first output signal (57) of the first controller (55) and the first manipulated variable (5, 7, 89) affecting the first electromagnetic radiation (1) of the optical oscillator (3), and generating a modulation signal (65) with a modulation unit (63), and controlling the first or a second manipulated variable (5, 7, 89) with the modulation signal (65), demodulating the first output signal (57) of the first controller (55) with the modulation signal (65) and generating a second deviation signal (71) from a fixed value (73), controlling a second controller (74) with the second deviation signal (71) and controlling one of the manipulated variables (5, 7, 89) with an output signal (75) of the second controller (74) and setting the second deviation signal (71).
H01S 3/139 - Stabilisation de paramètres de sortie de laser, p. ex. fréquence ou amplitude par commande de la position relative ou des propriétés réfléchissantes des réflecteurs de la cavité
H01S 3/13 - Stabilisation de paramètres de sortie de laser, p. ex. fréquence ou amplitude
1 of the optical frequency comb is determined between laser light coupled out at a reference point within the frequency comb assembly upstream of the at least one optical element and laser light coupled out at a measurement point provided in the branch light path downstream of the at least one optical element. Phase correction for the laser light from the branch light path is based on a deviation of the determined phase difference from a target value.
H01S 3/13 - Stabilisation de paramètres de sortie de laser, p. ex. fréquence ou amplitude
H01S 3/11 - Blocage de modesCommutation-QAutres techniques d'impulsions géantes, p. ex. vidange de cavité
H01S 3/131 - Stabilisation de paramètres de sortie de laser, p. ex. fréquence ou amplitude par commande du milieu actif, p. ex. par commande des procédés ou des appareils pour l'excitation
H01S 3/137 - Stabilisation de paramètres de sortie de laser, p. ex. fréquence ou amplitude par commande de dispositifs placés dans la cavité pour la stabilisation de la fréquence
H01S 3/139 - Stabilisation de paramètres de sortie de laser, p. ex. fréquence ou amplitude par commande de la position relative ou des propriétés réfléchissantes des réflecteurs de la cavité
H01S 3/094 - Procédés ou appareils pour l'excitation, p. ex. pompage utilisant le pompage optique par de la lumière cohérente
H01S 3/10 - Commande de l'intensité, de la fréquence, de la phase, de la polarisation ou de la direction du rayonnement, p. ex. commutation, ouverture de porte, modulation ou démodulation
H01S 3/106 - Commande de l'intensité, de la fréquence, de la phase, de la polarisation ou de la direction du rayonnement, p. ex. commutation, ouverture de porte, modulation ou démodulation par commande de dispositifs placés dans la cavité
H01S 3/107 - Commande de l'intensité, de la fréquence, de la phase, de la polarisation ou de la direction du rayonnement, p. ex. commutation, ouverture de porte, modulation ou démodulation par commande de dispositifs placés dans la cavité utilisant des dispositifs électro-optiques, p. ex. produisant un effet Pockels ou Kerr
H01S 3/00 - Lasers, c.-à-d. dispositifs utilisant l'émission stimulée de rayonnement électromagnétique dans la gamme de l’infrarouge, du visible ou de l’ultraviolet
H01S 3/139 - Stabilisation de paramètres de sortie de laser, p. ex. fréquence ou amplitude par commande de la position relative ou des propriétés réfléchissantes des réflecteurs de la cavité
H01S 3/081 - Structure ou forme des résonateurs optiques ou de leurs composants comprenant trois réflecteurs ou plus
H01S 3/11 - Blocage de modesCommutation-QAutres techniques d'impulsions géantes, p. ex. vidange de cavité
The invention relates to a method for operating a laser device (1), by means of which an optical frequency comb can be stabilized, wherein the frequencies of the modes thereof are describable by the formula fm= m x frep + f0, where frep is a mode spacing, f0 is an offset frequency and m is a natural number. At least one signal (S1, S2, S3, S4) is determined, which correlates with an actual value of a degree of freedom (F), wherein the degree of freedom (F) is a linear combination of the offset frequency f0 and the mode spacing frep of the frequency comb. The actual value of the degree of freedom (F) is set in a predetermined capture range (F) of a second control unit (40) using a first control unit (10) on the basis of the signal. As soon as the capture range (ΔFcapture) of the second control unit (40) is reached, the second control unit (40) is activated and the actual value is regulated to an intended value (Fintended) with the aid of the second control unit (40).
H01S 3/13 - Stabilisation de paramètres de sortie de laser, p. ex. fréquence ou amplitude
H01S 3/139 - Stabilisation de paramètres de sortie de laser, p. ex. fréquence ou amplitude par commande de la position relative ou des propriétés réfléchissantes des réflecteurs de la cavité
H01S 3/094 - Procédés ou appareils pour l'excitation, p. ex. pompage utilisant le pompage optique par de la lumière cohérente
H01S 3/11 - Blocage de modesCommutation-QAutres techniques d'impulsions géantes, p. ex. vidange de cavité
H01S 3/131 - Stabilisation de paramètres de sortie de laser, p. ex. fréquence ou amplitude par commande du milieu actif, p. ex. par commande des procédés ou des appareils pour l'excitation
H01S 3/137 - Stabilisation de paramètres de sortie de laser, p. ex. fréquence ou amplitude par commande de dispositifs placés dans la cavité pour la stabilisation de la fréquence
H01S 3/10 - Commande de l'intensité, de la fréquence, de la phase, de la polarisation ou de la direction du rayonnement, p. ex. commutation, ouverture de porte, modulation ou démodulation
H01S 3/106 - Commande de l'intensité, de la fréquence, de la phase, de la polarisation ou de la direction du rayonnement, p. ex. commutation, ouverture de porte, modulation ou démodulation par commande de dispositifs placés dans la cavité
H01S 3/08 - Structure ou forme des résonateurs optiques ou de leurs composants
H01S 3/137 - Stabilisation de paramètres de sortie de laser, p. ex. fréquence ou amplitude par commande de dispositifs placés dans la cavité pour la stabilisation de la fréquence
H01S 3/109 - Multiplication de la fréquence, p. ex. génération d'harmoniques
H01S 3/107 - Commande de l'intensité, de la fréquence, de la phase, de la polarisation ou de la direction du rayonnement, p. ex. commutation, ouverture de porte, modulation ou démodulation par commande de dispositifs placés dans la cavité utilisant des dispositifs électro-optiques, p. ex. produisant un effet Pockels ou Kerr
The invention relates to a method for operating a laser device, comprising the steps: a) providing a laser pulse (110) in a resonator (1) so that the laser pulse (10) circulates in the resonator (1), the laser pulse (10) having a carrier wave (120); b) determining an offset frequency (f0) of the frequency comb corresponding to the laser pulse (110), the frequency comb having a plurality of laser modes (fm) at a distance (frep) from one another, the frequencies of which can be described by the formula: fm = m * frep + f0, m being a natural number; and c) varying the offset frequency (f0) by varying a geometric phase (Δφ) that is impressed on the carrier wave (120) of the laser pulse (110) per resonator revolution.
H01S 3/13 - Stabilisation de paramètres de sortie de laser, p. ex. fréquence ou amplitude
H01S 3/00 - Lasers, c.-à-d. dispositifs utilisant l'émission stimulée de rayonnement électromagnétique dans la gamme de l’infrarouge, du visible ou de l’ultraviolet
H01S 3/10 - Commande de l'intensité, de la fréquence, de la phase, de la polarisation ou de la direction du rayonnement, p. ex. commutation, ouverture de porte, modulation ou démodulation
H01S 3/081 - Structure ou forme des résonateurs optiques ou de leurs composants comprenant trois réflecteurs ou plus
H01S 3/106 - Commande de l'intensité, de la fréquence, de la phase, de la polarisation ou de la direction du rayonnement, p. ex. commutation, ouverture de porte, modulation ou démodulation par commande de dispositifs placés dans la cavité
H01S 3/107 - Commande de l'intensité, de la fréquence, de la phase, de la polarisation ou de la direction du rayonnement, p. ex. commutation, ouverture de porte, modulation ou démodulation par commande de dispositifs placés dans la cavité utilisant des dispositifs électro-optiques, p. ex. produisant un effet Pockels ou Kerr
H01S 3/11 - Blocage de modesCommutation-QAutres techniques d'impulsions géantes, p. ex. vidange de cavité
H01S 3/08 - Structure ou forme des résonateurs optiques ou de leurs composants
H01S 3/139 - Stabilisation de paramètres de sortie de laser, p. ex. fréquence ou amplitude par commande de la position relative ou des propriétés réfléchissantes des réflecteurs de la cavité
In a laser (12, 18) with a laser resonator (13), the laser resonator (13) has a non-linear optical loop mirror (1, 1′), NOLM, which is adapted to guide counter-propagating portions of laser pulses, and to bring the counter-propagating portions of laser pulses into interference with each other at an exit point (4) of the NOLM (1, 1′). The non-linear optical loop mirror (1, 1′) contains a non-reciprocal optical element (7, 7′) on a linear section of the NOLM. In addition to the NOLM, the laser resonator (13) has a linear cavity section. The linear section of the NOLM and the linear cavity section (19) are reassembled on a microoptical bench (112) or within a cylindrical carrier (112).
H01S 3/00 - Lasers, c.-à-d. dispositifs utilisant l'émission stimulée de rayonnement électromagnétique dans la gamme de l’infrarouge, du visible ou de l’ultraviolet
9.
Spectroscopy assembly including optical ring resonators and at least one waveguide on a common substrate
A spectroscopy assembly having a first and a second optical ring resonator, each provided with a material having an intensity-dependent refraction index. The spectroscopy assembly further includes at least one waveguide, which is guided along the optical ring resonator at a distance such that the light of a continuous wave laser guided in the waveguide can be coupled into the optical ring resonator, and a frequency comb generated from the light of the continuous wave laser in the optical ring resonator can be coupled out of the waveguide. The optical ring resonators and the at least one waveguide are provided on a common substrate.
G01J 3/42 - Spectrométrie d'absorptionSpectrométrie à double faisceauSpectrométrie par scintillementSpectrométrie par réflexion
G01J 3/453 - Spectrométrie par interférence par corrélation des amplitudes
G01J 3/457 - Spectrométrie par corrélation, p. ex. d'intensité
G02B 6/12 - Guides de lumièreDétails de structure de dispositions comprenant des guides de lumière et d'autres éléments optiques, p. ex. des moyens de couplage du type guide d'ondes optiques du genre à circuit intégré
G02B 6/293 - Moyens de couplage optique ayant des bus de données, c.-à-d. plusieurs guides d'ondes interconnectés et assurant un système bidirectionnel par nature en mélangeant et divisant les signaux avec des moyens de sélection de la longueur d'onde
09 - Appareils et instruments scientifiques et électriques
10 - Appareils et instruments médicaux
41 - Éducation, divertissements, activités sportives et culturelles
42 - Services scientifiques, technologiques et industriels, recherche et conception
Produits et services
Scientific, surveying, photographic, cinematographic,
optical, weighing, measuring, signalling, checking
(supervision) and teaching apparatus and instruments;
apparatus and instruments for conducting, switching,
transforming, accumulating, regulating or controlling
electricity; apparatus and instruments for conducting,
transforming or controlling electromagnetic radiation, in
particular light; lasers, laser systems, frequency comb
generators, short pulse lasers, ultra-short pulse lasers,
continuous wave lasers (continuous beam lasers); electronics
and electronic systems for controlling, synchronising and
stabilising lasers; detectors, in particular for
electromagnetic radiation; apparatus and instruments for
emitting or detecting terahertz radiation; apparatus for
recording, transmission or reproduction of sound or images;
magnetic data carriers; compact discs, dvds and other
digital recording media; calculating machines, data
processing hardware, computers; computer software; apparatus
for detecting trace gases, spectroscopy apparatus, apparatus
for spectroscopic detection of atoms and molecules,
apparatus for calibration of spectrographs, apparatus for
dissemination of time and frequency information. Surgical, medical, dental and veterinary apparatus and
instruments, artificial limbs, eyes and teeth; orthopedic
articles; suture materials. Education; providing of training; entertainment; sporting
and cultural activities. Scientific and technological services and research and
design relating thereto; industrial analysis and research
services; design and development of computer hardware and
software.
09 - Appareils et instruments scientifiques et électriques
10 - Appareils et instruments médicaux
Produits et services
Scientific, surveying, photographic, cinematographic,
optical, weighing, measuring, signalling, checking
(supervision) and teaching apparatus and instruments;
apparatus and instruments for conducting, switching,
transforming, accumulating, regulating or controlling
electricity; apparatus and instruments for conducting,
transforming or controlling electromagnetic radiation, in
particular light; lasers, laser systems, frequency comb
generators, short pulse lasers, ultra-short pulse lasers,
continuous wave lasers (continuous beam lasers); electronics
and electronic systems for controlling, synchronising and
stabilising lasers; detectors, in particular for
electromagnetic radiation; apparatus and instruments for
emitting or detecting terahertz radiation; apparatus for
recording, transmission or reproduction of sound or images;
magnetic data carriers; compact discs, dvds and other
digital recording media; calculating machines, data
processing hardware, computers; apparatus for detecting
trace gases, spectroscopy apparatus, apparatus for
spectroscopic detection of atoms and molecules, apparatus
for calibration of spectrographs, apparatus for
dissemination of time and frequency information; computer
software. Surgical, medical, dental and veterinary apparatus and
instruments, artificial limbs, eyes and teeth; orthopedic
articles; suture materials; lasers for medical purposes.
A laser (12, 18) with a laser resonator (13), the laser resonator (13) having a non-linear optical loop mirror (1, 1′), NOLM, which is adapted to guide counter-propagating portions of laser pulses, and to bring the counter-propagating portions of laser pulses into interference with each other at an exit point (4) of the NOLM (1, 1′). The non-linear optical loop mirror (1, 1′) has a non-reciprocal optical element (7, 7′).
H01S 3/091 - Procédés ou appareils pour l'excitation, p. ex. pompage utilisant le pompage optique
H01S 3/11 - Blocage de modesCommutation-QAutres techniques d'impulsions géantes, p. ex. vidange de cavité
H01S 3/00 - Lasers, c.-à-d. dispositifs utilisant l'émission stimulée de rayonnement électromagnétique dans la gamme de l’infrarouge, du visible ou de l’ultraviolet
13.
Optical assembly and method for generating light pulses of variable delay
The invention relates to an optical assembly (1) comprising a pulsed light source (2) for generating primary light pulses (4), a pulse splitter (5) for splitting said primary light pulses (4) into first and second secondary light pulses (7), and a delay element (8) for delaying said second secondary light pulses (7) relative to said first secondary light pulses (6), where the pulse repetition rate of said pulsed light source (2) is variable in order to change a temporal delay between different secondary light pulses (6,7) The invention is characterized in that said optical assembly (1) comprises a thermal insulation (12), a temperature stabilizer (16) or a temperature compensator (13) for said delay element (8) and/or a control circuit (27) for determining and controlling a drift of said pulse repetition rate.
H01S 3/10 - Commande de l'intensité, de la fréquence, de la phase, de la polarisation ou de la direction du rayonnement, p. ex. commutation, ouverture de porte, modulation ou démodulation
09 - Appareils et instruments scientifiques et électriques
10 - Appareils et instruments médicaux
Produits et services
Scientific, surveying, [ photographic, cinematographic, ] optical, weighing, measuring, signalling, checking and teaching apparatus and instruments, namely, apparatus and instruments for measuring a property of light such as its intensity, wavelength distribution, phase, pulse length, or pulse energy; apparatus and instruments for measuring a property of an electromagnetic signal, in particular its frequency; [ apparatus and instruments for conducting, switching, transforming, accumulating, regulating or controlling electricity, namely, locking electronics of locking of an electronic signal to a reference signal or reference frequency; apparatus and instruments for conducting, transforming or controlling electromagnetic radiation; in particular, light, namely, optical components; mirrors; scanning systems for electromagnetic radiation; ] apparatus and instruments for the measurement and stabilization of a frequency or of a frequency distribution of electromagnetic radiation; lasers; laser measuring systems which include a source of laser radiation; laser systems which include a material processing device; frequency comb generators, short pulse lasers, ultra-short pulse lasers, [ continuous wave lasers; electronics and electronic systems for controlling, synchronising and stabilising lasers, namely, frequency stabilizers, repetition rate stabilizers, phase locking electronics; electromagnetic radiation detectors; terahertz radiation detectors; apparatus for recording, transmission or reproduction of sound or images; digital recording media such as compact discs, DVDs featuring training software or operating software for lasers and for apparatus and instruments for measuring or controlling a property of light; calculating machines, data processing equipment and computers; computer training software or computer operating software for lasers and for apparatus and instruments for measuring or controlling a property of light; ] gas detectors for detecting the presence of gas; spectroscopy apparatus, apparatus for spectroscopic detection of atoms and molecules, apparatus for calibration of spectrographs, apparatus for dissemination of time and frequency information of an electronic signal Surgical, medical, [ dental and veterinary ] apparatus and instruments, namely, [ laser scalpels, ] laser systems for diagnostics, [ laser surgery systems, ] laser systems for therapy, and ophthalmologic laser; lasers for medical purposes
09 - Appareils et instruments scientifiques et électriques
10 - Appareils et instruments médicaux
41 - Éducation, divertissements, activités sportives et culturelles
42 - Services scientifiques, technologiques et industriels, recherche et conception
Produits et services
Scientific, surveying, [ photographic, cinematographic, ] optical, weighing, measuring, signalling, checking and teaching apparatus and instruments, namely, apparatus and instruments for measuring a property of light such as its intensity, wavelength distribution, phase, pulse length, or pulse energy; apparatus and instruments for measuring a property of an electromagnetic signal, in particular its frequency; apparatus and instruments for conducting, switching, transforming, accumulating, regulating or controlling electricity, namely, locking electronics of locking of an electronic signal to a reference signal or reference frequency; apparatus and instruments for conducting, transforming or controlling electromagnetic radiation; in particular, light, namely, optical components; mirrors; scanning systems for electromagnetic radiation; apparatus and instruments for the measurement and stabilization of a frequency or of a frequency distribution of electromagnetic radiation; lasers; laser measuring systems which include a source of laser radiation; laser systems which include a material processing device; frequency comb generators, short pulse lasers, ultra-short pulse lasers, continuous wave lasers; electronics and electronic systems for controlling, synchronising and stabilising lasers, namely, frequency stabilizers, repetition rate stabilizers, phase locking electronics; electromagnetic radiation detectors; terahertz radiation detectors; apparatus for recording, transmission or reproduction of [ sound or ] images; digital recording media such as compact discs, DVDs featuring training software or operating software for lasers and for apparatus and instruments for measuring or controlling a property of light; [ calculating machines, data processing equipment and computers; ] computer training software or computer operating software for lasers and for apparatus and instruments for measuring or controlling a property of light; gas detectors for detecting the presence of gas; spectroscopy apparatus, apparatus for spectroscopic detection of atoms and molecules, apparatus for calibration of spectrographs, apparatus for dissemination of time and frequency information of an electronic signal Surgical, medical, [ dental and veterinary ] apparatus and instruments, namely, [ laser scalpels, ] laser systems for diagnostics, [ laser surgery systems, ] laser systems for therapy, and ophthalmologic laser Education services, namely, providing seminars and workshops in the field of optical technology, laser technology, laser surgery or laser therapy; training services in the field of optical technology, laser technology, laser surgery or laser therapy; entertainment services in the nature of performances with lasers Scientific and technological services, namely, research and design in the field of optical technology, laser technology, laser surgery or laser therapy; scientific and technological services, namely, scientific research and industrial analysis in the field of optical technology, laser technology, laser surgery or laser therapy; design and development of computer hardware and software
16.
Optical arrangement and method for examining or processing an object
The invention relates to an optical arrangement (20) and to a method of examining or processing an object (46). Here, a first laser pulse with a first central wavelength and a second laser pulse with a second central wavelength different from the first central wavelength are generated. Both pulses are superimposed in or on the object (46) such that multi-photon absorption takes place there with the involvement of at least one photon of the first laser pulse and at least one photon of the second laser pulse.
G01N 21/31 - CouleurPropriétés spectrales, c.-à-d. comparaison de l'effet du matériau sur la lumière pour plusieurs longueurs d'ondes ou plusieurs bandes de longueurs d'ondes différentes en recherchant l'effet relatif du matériau pour les longueurs d'ondes caractéristiques d'éléments ou de molécules spécifiques, p. ex. spectrométrie d'absorption atomique
B01J 19/12 - Procédés utilisant l'application directe de l'énergie ondulatoire ou électrique, ou un rayonnement particulaireAppareils à cet usage utilisant des radiations électromagnétiques
The invention relates to a system (1) for generating a (high-frequency) beat signal. The system has a first light source (3) with a multimode spectrum, a second light source (4) and a coupler and filter arrangement (5) with a first port (6) for coupling in light from the first light source (3), and a second port (7) for coupling in light from the second light source (4). Furthermore, a detector (11) is provided to which light of both light sources (3, 4) can be supplied. The coupler and filter arrangement (5) has a spectral filter (20, 28) for filtering out one or several modes from the spectrum of the first light source (3), and a first fiber-optical coupler (17, 23, 26) for coupling the light of the second light source (4) and the not yet filtered or the already filtered light of the first light source (3). The coupler and filter arrangement (5) is configured to be merely fiber-optical.
G02B 6/00 - Guides de lumièreDétails de structure de dispositions comprenant des guides de lumière et d'autres éléments optiques, p. ex. des moyens de couplage
G02B 6/34 - Moyens de couplage optique utilisant des prismes ou des réseaux
G02B 6/42 - Couplage de guides de lumière avec des éléments opto-électroniques
H01S 3/23 - Agencement de plusieurs lasers non prévu dans les groupes , p. ex. agencement en série de deux milieux actifs séparés
H01S 3/13 - Stabilisation de paramètres de sortie de laser, p. ex. fréquence ou amplitude
H01S 3/00 - Lasers, c.-à-d. dispositifs utilisant l'émission stimulée de rayonnement électromagnétique dans la gamme de l’infrarouge, du visible ou de l’ultraviolet
G01J 9/04 - Mesure du déphasage des rayons lumineuxRecherche du degré de cohérenceMesure de la longueur d'onde des rayons lumineux par battement de deux ondes de même origine mais décalées en fréquence et par mesure du déphasage de l'onde basse fréquence obtenue
09 - Appareils et instruments scientifiques et électriques
10 - Appareils et instruments médicaux
Produits et services
Scientific, surveying, photographic, cinematographic, optical, weighing, measuring, signalling, checking (supervision) and teaching apparatus and instruments; Apparatus and instruments for conducting, switching, transforming, accumulating, regulating or controlling electricity; Apparatus and instruments for conducting, transforming or controlling electromagnetic radiation, in particular light; Lasers, Laser systems, Frequency comb generators, short pulse lasers, ultra-short pulse lasers, continuous wave lasers (continuous beam lasers); Electronics and electronic systems for controlling, synchronising and stabilising lasers; Detectors, in particular for electromagnetic radiation; Apparatus and instruments for emitting or detecting terahertz radiation; Apparatus for recording, transmission or reproduction of sound or images; Magnetic data carriers; Compact discs, DVDs and other digital recording media; Calculating machines, Data processing hardware, Computers; computer software, Apparatus for detecting trace gases, spectroscopy apparatus, apparatus for spectroscopic detection of atoms and molecules, apparatus for calibration of spectrographs, apparatus for dissemination of time and frequency information. Surgical, medical, dental and veterinary apparatus and instruments, artificial limbs, eyes and teeth; Orthopedic articles; Suture materials; Lasers for medical purposes.
09 - Appareils et instruments scientifiques et électriques
10 - Appareils et instruments médicaux
41 - Éducation, divertissements, activités sportives et culturelles
42 - Services scientifiques, technologiques et industriels, recherche et conception
Produits et services
Scientific, surveying, photographic, cinematographic, optical, weighing, measuring, signalling, checking (supervision) and teaching apparatus and instruments; Apparatus and instruments for conducting, switching, transforming, accumulating, regulating or controlling electricity; Apparatus and instruments for conducting, transforming or controlling electromagnetic radiation, in particular light; Lasers, Laser systems, Frequency comb generators, short pulse lasers, ultra-short pulse lasers, continuous wave lasers (continuous beam lasers); Electronics and electronic systems for controlling, synchronising and stabilising lasers; Detectors, in particular for electromagnetic radiation; Apparatus and instruments for emitting or detecting terahertz radiation; Apparatus for recording, transmission or reproduction of sound or images; Magnetic data carriers; Compact discs, DVDs and other digital recording media; Calculating machines, Data processing hardware, Computers; Computer software; Apparatus for detecting trace gases, spectroscopy apparatus, apparatus for spectroscopic detection of atoms and molecules, apparatus for calibration of spectrographs, apparatus for dissemination of time and frequency information. Surgical, medical, dental and veterinary apparatus and instruments, artificial limbs, eyes and teeth; Orthopedic articles; Suture materials. Education; Providing of training; Entertainment; Sporting and cultural activities. Scientific and technological services and research and design relating thereto; Industrial analysis and research services; Design and development of computer hardware and software.
ECOLE POLYTECHNIQUE FEDERALE DE LAUSANNE (EPFL) (Suisse)
Inventeur(s)
Kippenberg, Tobias
Holzwarth, Ronald
Abrégé
The invention relates to a spectroscopy array having a first and a second optical ring resonator (1, 3), each provided with a material having an intensity-dependent refraction index. The spectroscopy array further comprises at least one waveguide (2, 4, 7, 8), which is guided along the optical ring resonator at a distance such that the light of a continuous beam laser (2b, 4b, 20) guided in the waveguide (2, 4, 7) can be coupled into the optical ring resonator (1, 3), and a frequency comb generated from the light of the continuous beam laser in the optical ring resonator can be coupled out of the waveguide (2, 4, 8). The optical ring resonators (1, 3) and the at least one waveguide (2, 4, 7, 8) are provided on a shared substrate (9).
G01J 3/42 - Spectrométrie d'absorptionSpectrométrie à double faisceauSpectrométrie par scintillementSpectrométrie par réflexion
G01J 3/453 - Spectrométrie par interférence par corrélation des amplitudes
G02B 6/12 - Guides de lumièreDétails de structure de dispositions comprenant des guides de lumière et d'autres éléments optiques, p. ex. des moyens de couplage du type guide d'ondes optiques du genre à circuit intégré
G01J 3/457 - Spectrométrie par corrélation, p. ex. d'intensité
21.
Device for generating or receiving terahertz radiation
A device for generating or receiving electromagnetic radiation in a frequency range from 10 GHz to 100 THz is provided. The device includes a housing and a wave guide fiber leading into the housing. The wave guide fiber is adapted for guiding pulsed laser light with a first central wavelength. Within the housing, a terahertz converter is provided for generating or receiving the electromagnetic radiation in the terahertz range. The device also includes a frequency converter for converting the light exiting from the wave guide fiber to a second central wavelength being arranged between the end of the wave guide fiber and the terahertz converter in such a way that the terahertz converter is impinged by the frequency converted light.
G02F 2/02 - Changement de fréquence de la lumière, p. ex. par compteurs quantiques
H01S 3/10 - Commande de l'intensité, de la fréquence, de la phase, de la polarisation ou de la direction du rayonnement, p. ex. commutation, ouverture de porte, modulation ou démodulation
22.
Method for generating two optical pulses with a variable, time pulse interval
using the two pulses, in particular for a measuring method, where a time delay of the two pulses in the respective target area is adjustable by a pulse repetition rate of the pulsed beam.
A device for generating or receiving electromagnetic radiation in a frequency range from 10 GHz to 100 THz is provided. The device includes a housing and a wave guide fiber leading into the housing. The wave guide fiber is adapted for guiding pulsed laser light with a first central wavelength. Within the housing, a terahertz converter is provided for generating or receiving the electromagnetic radiation in the terahertz range. The device also includes a frequency converter for converting the light exiting from the wave guide fiber to a second central wavelength being arranged between the end of the wave guide fiber and the terahertz converter in such a way that the terahertz converter is impinged by the frequency converted light.
G02F 2/02 - Changement de fréquence de la lumière, p. ex. par compteurs quantiques
H01S 3/10 - Commande de l'intensité, de la fréquence, de la phase, de la polarisation ou de la direction du rayonnement, p. ex. commutation, ouverture de porte, modulation ou démodulation
The invention concerns a laser system with a frequency comb generator for generating a comb of optical frequencies having an offset frequency and a plurality of equidistant modes. The laser system further preferably includes at least one stabilizer for stabilizing the frequency comb onto a certain offset frequency and/or onto a certain mode spacing. The laser system further includes an optical amplifier for amplifying the frequency comb coupled out of the frequency comb generator, the amplification factor of this amplifier being variable; and the amplifier is followed by a Raman medium for generating a Raman shift of the frequency comb.
H01S 3/30 - Lasers, c.-à-d. dispositifs utilisant l'émission stimulée de rayonnement électromagnétique dans la gamme de l’infrarouge, du visible ou de l’ultraviolet utilisant des effets de diffusion, p. ex. l'effet Brillouin ou Raman stimulé
25.
Interferometer, in particular for determining and stabilizing the relative phase of short pulses
A description is given of an optical structure (100), in particular for determining and stabilizing the relative phase of short pulses, which contains a broadening device (6) for broadening the frequency spectrum of pulses of electromagnetic radiation, and a frequency multiplier device (8) for multiplying at least one frequency component of the pulses, wherein a focusing lens optic (7) is arranged between the broadening device and the frequency multiplier device, which focusing lens optic can be used to focus the pulses into the frequency multiplier device (8). Uses of this optical structure are also described.
