Abstract

Gaseous laser systems and related techniques are disclosed. Techniques disclosed herein may be utilized, in accordance with some embodiments, in providing a gaseous laser system with a configuration that provides (A) pump illumination with distinct edge surfaces for an extended depth and (B) an output beam illumination from a resonator cavity with distinct edges in its reflectivity profile, thereby providing (C) pump beam and resonator beam illumination on a volume so that the distinct edge surfaces of its pump and resonator beam illumination are shared-edge surfaces with (D) further edge surfaces of the amplifier volume at the surfaces illuminated directly by the pump or resonator beams, as defined by optical windows and (optionally) by one or more flowing gas curtains depleted of the alkali vapor flowing along those optical windows. Techniques disclosed herein may be implemented, for example, in a diode-pumped alkali laser (DPAL) system, in accordance with some embodiments.

IPC Classes  ?

• H01S 3/0941 - Processes or apparatus for excitation, e.g. pumping using optical pumping by coherent light of a semiconductor laser, e.g. of a laser diode
• H01S 3/03 - Constructional details of gas laser discharge tubes
• H01S 3/0943 - Processes or apparatus for excitation, e.g. pumping using optical pumping by coherent light of a gas laser
• H01S 3/104 - Controlling the intensity, frequency, phase, polarisation or direction of the emitted radiation, e.g. switching, gating, modulating or demodulating by controlling the active medium, e.g. by controlling the processes or apparatus for excitation in gas lasers
• H01S 3/227 - Metal vapour

Abstract

Gaseous laser systems and related techniques are disclosed. Techniques disclosed herein may be utilized, in accordance with some embodiments, in providing a gaseous laser system with a configuration that provides (A) pump illumination with distinct edge surfaces for an extended depth and (B) an output beam illumination from a resonator cavity with distinct edges in its reflectivity profile, thereby providing (C) pump beam and output beam illumination on a volume so that the distinct edge surfaces of its pump and beam illumination are shared-edge surfaces with (D) further edge surfaces of the amplifier volume at the surfaces illuminated directly by the pump or output beams, as defined by optical windows and (optionally) by one or more flowing gas curtains depleted of the alkali vapor flowing along those optical windows. Techniques disclosed herein may be implemented, for example, in a diode-pumped alkali laser (DPAL) system, in accordance with some embodiments.

IPC Classes  ?

• H01S 3/0941 - Processes or apparatus for excitation, e.g. pumping using optical pumping by coherent light of a semiconductor laser, e.g. of a laser diode
• H01S 3/104 - Controlling the intensity, frequency, phase, polarisation or direction of the emitted radiation, e.g. switching, gating, modulating or demodulating by controlling the active medium, e.g. by controlling the processes or apparatus for excitation in gas lasers
• H01S 3/03 - Constructional details of gas laser discharge tubes
• H01S 3/0943 - Processes or apparatus for excitation, e.g. pumping using optical pumping by coherent light of a gas laser
• H01S 3/034 - Optical devices within, or forming part of, the tube, e.g. windows, mirrors

Abstract

An apparatus, system, and methods for polarizing nuclei of a noble gas are disclosed. The disclosed system may include a polarization apparatus configured to polarize a noble gas mixture including xenon-129. The disclosed system also may include separate volumes for (1) saturating the polarizable noble gas mixture with alkali metal vapor, (2) desaturating said noble gas mixture from its alkali metal vapor after polarization is completed, (3) intermediate storage of the resultant polarized noble gas mixture, and (4) transfer of said polarized noble gas mixture to a storage vessel (e.g., a delivery bag). The disclosed system further may include separate reservoirs for (1) the noble gas(es) to be polarized, (2) lightweight gas(es) to displace the noble gas(es), and (3) a heavy inert gas (e.g., such as natural xenon) to push the polarized noble gas(es) into a storage vessel.

IPC Classes  ?

• B01J 19/12 - Processes employing the direct application of electric or wave energy, or particle radiation; Apparatus therefor employing electromagnetic waves
• C01B 23/00 - Noble gases; Compounds thereof
• G01R 33/28 - Arrangements or instruments for measuring magnetic variables involving magnetic resonance - Details of apparatus provided for in groups
• G01R 33/56 - Image enhancement or correction, e.g. subtraction or averaging techniques

Goods & Services

Contrast media for in-vivo imaging; Contrast media for use with imaging medical equipment; Imaging agents for magnetic resonance imaging (MRI)

Goods & Services

Diagnostic agents, preparations, and substances for scientific and research purposes Diagnostic agents, preparations and substances for medical imaging