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Stimulated Raman scattering and four-wave mixing in CO/sub 2/-pumped para-H/sub 2 [electronic resource].

Published
Los Alamos, N.M. : Los Alamos Scientific Laboratory, 1981.
Oak Ridge, Tenn. : Distributed by the Office of Scientific and Technical Information, U.S. Dept. of Energy.
Physical Description
Pages: 36 : digital, PDF file
Additional Creators
Los Alamos Scientific Laboratory and United States. Department of Energy. Office of Scientific and Technical Information
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Summary
The Stokes source and CO/sub 2/ are combined with orthogonal polarization on a Ge beamsplitter and rendered oppositely circularly polarized by a KBr Fresnel rhomb, and then co-propagated through the amplifying medium contained in a 3m LN/sub 2/-cooled alumina waveguide. With this system, gain as high as e/sup 9/ on the peak of mode-locked spikes was observed, and with an HF OPO as input source, the system could be driven into pump depletion, but only for well-mode-locked pulses. Work with multipass refocusing cells is described both with a room temperature multipass cell (MPC) and also with a LN/sub 2/-cooled MPC. In addition to the gain measurements with the diode, we have obtained fully-depleted pump pulses with an OPO input, and have observed two-frequency depletion using two-pump pulses and one Stokes input, which is initiated by four-wave mixing. We have also obtained pump depletion starting from noise with a strong 9-..mu..m pump. The process involved is stimulated rotational Raman scattering in para-H/sub 2/. Scattering occurs from the J = 0 to the J = 2 rotational state which gives a Raman shift of 354.36 cm/sup -1/. By using para-H/sub 2/, from the blowoff of LH/sub 2/, one eliminates the odd rotational levels and thereby increase the gain for the J = 0 to J = 2 Raman transition. Results are presented and discussed. (WHK)
Report Numbers
E 1.99:la-ur-81-2348
E 1.99: conf-810844-1
conf-810844-1
la-ur-81-2348
Subject(s)
Other Subject(s)
Note
Published through SciTech Connect.
01/01/1981.
"la-ur-81-2348"
" conf-810844-1"
"DE81028730"
Gordon conference on nonlinear optics and lasers, Wolfesboro, NH, USA, 3 Aug 1981.
Kurnit, N.A.; Carlsten, J.L.
Funding Information
W-7405-ENG-36
View MARC record | catkey: 14117189