Dynamics of the optically pumped midinfrared NH/sub 3/ laser at high pump power: Raman gain and ac stark shifts

Journal Article · Sat Sep 01 04:00:00 EDT 1984 · IEEE J. Quant. Electron.; (United States)

DOI:https://doi.org/10.1109/JQE.1984.1072504· OSTI ID:5157802

Morrison, H D; Garside, B K; Reid, J

Coherent effects produced by high-intensity pumping on aR(6, 0) in NH/sub 3/ are investigated for both the pure gas and for mixtures with an inert buffer gas. Two different Raman transitions are observed. One is the usual directly pumped Raman transition, and the other is pumped indirectly since it first requires a large population transfer to the upper vibrational level. This population transfer also creates inversion gain, shifted away from line center due to ac Stark shifts, on both transitions. Raman gain coefficients of 10 percent . cm/sup -1/ and inversion gain coefficients > 2 percent . cm/sup -1/ are observed, and compared to a combined density-matrix and rate-equation model.

• Research Organization: Departments of Engineering Physics and Physics, McMaster University, Hamilton, Ont
• OSTI ID: 5157802
• Journal Information: IEEE J. Quant. Electron.; (United States), Journal Name: IEEE J. Quant. Electron.; (United States) Vol. QE-20:9; ISSN IEJQA
• Country of Publication: United States
• Language: English

Related Subjects

42 ENGINEERING
420300* -- Engineering-- Lasers-- (-1989)
AMMONIA
AMPLIFICATION
BUFFERS
DIFFERENTIAL EQUATIONS
ELECTRODYNAMICS
ELECTROMAGNETIC RADIATION
ELEMENTS
ENERGY TRANSFER
EQUATIONS
FLUIDS
GAIN
GAS LASERS
GASES
HYDRIDES
HYDROGEN COMPOUNDS
INFRARED RADIATION
INTERMEDIATE INFRARED RADIATION
LASERS
MATHEMATICAL MODELS
NITROGEN COMPOUNDS
NITROGEN HYDRIDES
NONMETALS
OPTICAL PUMPING
POPULATION INVERSION
PUMPING
RADIATIONS
RAMAN EFFECT
RAMAN SPECTRA
RARE GASES
SPECTRA
SPECTRAL SHIFT
STARK EFFECT