Tunable compressed hydrogen infrared Raman laser

Journal Article · Sat May 01 04:00:00 EDT 1976 · Sov. J. Quant. Electron. (Engl. Transl.); (United States)

DOI:https://doi.org/10.1070/QE1976v006n05ABEH011344· OSTI ID:7267226

Grasyuk, A Z; Zubarev, I G; Kotov, A V; Mikhailov, S I; Smirnov, V G

An investigation was made of a Raman laser utilizing compressed hydrogen (50--60 atm) in a cell 1 m long with an optical diameter of 70 mm. The pump source was a tunable neodymium laser with a central frequency ..nu../subp/=9460 +- 50 cm/sup -1/ emitting 50 nsec pulses of radiation with a spectral width ..delta nu../subp/approximately-less-than0.05 cm/sup -1/. A raster focusing system was used in combination with a light guide of square 1 x 1 cm cross section to ensure spatially homogeneous pumping of the active region of the Raman laser. Tunable emission was obtained at the first Stokes component (..nu../subs/=5305 +- 50 cm/sup -1/, lambda/subs/=1.867--1.903 ..mu..) with an energy efficiency of 10% and an output power up to 30 MW. Moreover, tunable emission was also obtained at the second Stokes component (..nu../sub ss/=1150 +- 50 cm/sup -1/, lambda/sub ss/=8.33--9.091 ..mu..) with an energy efficiency of approx.1% and an output energy of up to 0.5 J per pulse. The absorption spectrum of water vapor in the atmosphere was measured with a high resolution by means of this Raman laser. (AIP)

• Research Organization: P. N. Lebedev Physics Institute, Academy of Sciences of the USSR, Moscow
• OSTI ID: 7267226
• Journal Information: Sov. J. Quant. Electron. (Engl. Transl.); (United States), Journal Name: Sov. J. Quant. Electron. (Engl. Transl.); (United States) Vol. 6:5; ISSN SJQEA
• Country of Publication: United States
• Language: English

Related Subjects

42 ENGINEERING
420300* -- Engineering-- Lasers-- (-1989)
CRYOGENIC FLUIDS
EFFICIENCY
ELEMENTS
FLUIDS
GAS LASERS
HYDROGEN
LASERS
NEODYMIUM LASERS
NONMETALS
OPTICAL PUMPING
RAMAN EFFECT
SOLID STATE LASERS
STOKES PARAMETERS
TUNING