High-order stimulated electronic Raman scattering from lithium vapor |
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| Authors: | F. Z. Chen X. F. Han C. Y. R. Wu |
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| Affiliation: | (1) Institute of Optic-Electronics, Harbin Institute of Technology, Harbin, People's Republic of China;(2) Department of Physics and Space Sciences Center, University of Southern California, 90089-1341 Los Angeles, CA, USA |
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| Abstract: | An intense radiation at 395.0 nm has been observed when lithium vapor is optically pumped in a heat pipe with a pulsed dye laser whose output wavelength is tuned near the Li 2s–4s two-photon resonance transition. The radiation is emitted in the direction along the pump laser beam. It is proposed that the 395.0 nm radiation is mainly generated through three-photon excitation and one-Raman-photon scattering followed by two-cascade (spontaneous) emission. The overall reaction mechanism can be described by a parametric six-wave mixing process. The quantum efficiency of the observed process is estimated to be of the order of 2 × 10–6.This work was partially supported by the USC Faculty Research and Innovation Fund |
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| Keywords: | 33.80 42.65 42.72 |
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