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Determination of the concentration of carbon dioxide gas by a laser method
Selective optothermal detection of NO2 and H2O with a frequency-tuned CO waveguide laser
- A. G. Gerasimchuk, S. Kornilov, I. Ostrejkovskij, E. Protsenko, S. I. Tymper
- Materials Science
- 1 December 1992
The results are reported of the CO-laser optothermal (OT) detection of impurity gases when their absorption spectra overlap with those of an interfering gas. The influence of the latter was avoided… Expand
Switching of the emission wavelength of a helium-neon laser in the 3.39 μ region
The emission switched from the λ = 3.3922 μ 5s'[1/2]01–4p'[3/2]2(3s2–3p4) line to the λ1 = 3.3912 μ 5s'[1/2]01–4p'[1/2]1(3s2-3p4) line in such a way as to maximize the power at the λ1 wavelength. The… Expand
Model of an invariant correlator with liquid-crystal spatial light modulators
Invariant pattern recognition using a model of a coherent holographic correlator with liquid-crystal spatial light modulators as input devices has been experimentally analysed.
Laser frequency standards based on saturated-dispersion lines of methane
A review is given of the state-of-the-art and of likely developments in laser frequency standards based on two-mode gas (He — Ne) and solid-state (Li : RbCl) lasers, in which the reference points are… Expand
Optothermal spectroscopy of CH3CN by a waveguide CO2 laser: Atlas of absorption lines
An investigation of the absorption of CH3CN at 63 lines of a tunable waveguide CO2 laser has been performed using the optothermal technique.
Tunable CO2 waveguide laser
Investigation of the lasing conditions for several transitions in waveguide CO2 lasers utilizing a diffraction grating
A study was made of the conditions for two-frequency switchable lasing between neighboring vibrational--rotational transitions in waveguide CO/sub 2/ lasers utilizing a diffraction grating. A… Expand
Stabilization of the frequency of a two-mode He–Ne laser with the aid of magnetic hyperfine structure components of the λ =3.39 μ line of methane
The frequency of a two-mode He–Ne laser (λ =3.39 μ) with an intracavity telescopic beam expander was stabilized for the first time using resolved magnetic hyperfine structure components of the… Expand
LASER APPLICATIONS AND OTHER ASPECTS OF QUANTUM ELECTRONICS: Laser diagnostics of the ammonia pollutant in the atmosphere from an aircraft
A differential absorption method combined with heterodyne photodetection was used in a remote laser gas analyzer placed on board of an aircraft. A waveguide CO2 laser with alternate switching of… Expand