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Far-infrared gas-discharge laser
Proceedings of LFNM 2002. 4th International Workshop on Laser and Fiber-Optical Networks Modeling (IEEE Cat. No.02EX549), 2003The need for creation of a low cost and reliable submillimeter HCN laser for laboratory biomedical research has arisen. We have developed a submillimeter-wave gas-discharge HCN laser with a low frequency (LF) pumping of frequency 50 Hz specially designed for laboratory and clinical biomedical research.
V.K. Kiseliov +3 more
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SPIE Proceedings, 1986
Using two isotopic species, 12CH3F and 13CH3F in a Raman FIR laser kilowatt level pulses have been generated which can be tuned continuously over more than half of the range from 145 to 610 µm. Laser emission spectra and tuning curves are presented, and several molecular processes are described which produce distinctive features in the observed data.
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Using two isotopic species, 12CH3F and 13CH3F in a Raman FIR laser kilowatt level pulses have been generated which can be tuned continuously over more than half of the range from 145 to 610 µm. Laser emission spectra and tuning curves are presented, and several molecular processes are described which produce distinctive features in the observed data.
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Far-infrared laser power measurements
Proceedings of the IEEE, 1967Measurments of the peak and average output power of a 337-micron cyanide laser are reported. The tests served to indicate the usefulness at this high frequency of available oversize waveguide instrumentation-- a room-temperature average-power measurig bolometer, a liquid helium-cooled InSb detector-mixer and a double-prism attenuator.
F. Arams +4 more
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WA1 - Far-infrared molecular lasers
IEEE Journal of Quantum Electronics, 1973A summory is presented of recent accomplishments and the state of the art of far-infrared (far-IR) molecular lasers. Problems of excitation, laser line assignments, relaxation, and absolute frequency measurements are discussed. Predictions of future far-IR developments are made.
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Continuously tunable CH_3F Raman far-infrared laser
Optics Letters, 1981By pumping CH(3)F with a 150-mJ, continuously tunable, multiatmosphere CO(2) laser, we have produced approximately 0.2-mJ far-infrared laser pulses that can be tuned quasi-continuously over approximately 85% of the range from 220 to 400 microm. The tunable far-infrared laser action results from two-photon (Raman) transitions in the R branch of the CH(3)
P, Mathieu, J R, Izatt
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Optically pumped far infrared lasers
Infrared Physics, 1989Abstract The far-infrared (FIR) region of the electromagnetic spectrum is commonly thought of as the wavelength region ≈ 30μm-≈2 mm. Thus, the FIR wavelength region is located between the more familiar areas of microwaves and optics. Primarily due to the lack of FIR sources and detectors, the FIR region is difficult to access and therefore relatively
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Plasma-shutter for far-infrared laser radiation
Infrared Physics & Technology, 1994A new type of a plasma shutter for far-infrared (FIR) laser radiation is presented. This plasma shutter blocks a FIR laser beam within 0.7 ns by a rapidly expanding plasma. This device has been applied to produce FIR pulses with variable duration between 10 and 100 ns and to select 1-ns FIR pulses from a pulse train.
Knittel, J, Scherrer, DP, Kneubuhl, FK
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Grazing-incidence far-infrared gas laser
International Journal of Infrared and Millimeter Waves, 1984First realization of a grazing-incidence gas laser is reported. For this purpose an optically pumped 496 μm CH3F laser is equipped with a cavity consisting of a diffraction grating and a resonant mirror. The observed resonances are interpreted with an approximative theory and related to distributed feedback.
D. Wildmann +3 more
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Investigation of far-infrared lasers
Optical Engineering, 1993Far-infrared (FIR) lasers are frequently used in plasma diagnostics, molecular spectroscopy, and solid state material testing. The conversion of the power of the pumping laser into the FIR laser so far is usually not as effective as that theoretically predicted, because of the bottleneck'' of the vibrational relaxation rate.
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Far-Infrared Laser Assignments for Methylamine
International Journal of Infrared and Millimeter Waves, 2007Reported far-infrared laser lines for five different transition systems of CH3NH2 optically pumped by a CO2 laser have been identified spectroscopically through a high-resolution Fourier transform infrared study of the C-N stretching band together with CO2-laser/microwave-sideband broad-scan and Lamb-dip measurements.
R. M. Lees, Zhen-Dong Sun, Li-Hong Xu
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