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Stimulated Raman Scattering of a Modulated Laser Beam in Air: a Perturbation Approach |
| WEI Xiao-Hong1;QIAN Lie-Jia1;LI Ke-Yu2;ZHU He-Yuan1;FAN Dian-Yuan1 |
| 1Research Facility on Advanced Materials, State Key Laboratory for Advanced Photonic Materials and Devices, Department of Optical Science and Engineering, Fudan University, Shanghai 200433
2Center for High Energy Laser and Physics, China Academy of Engineering Physics, Mianyang 621900 |
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| Cite this article: |
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WEI Xiao-Hong, QIAN Lie-Jia, LI Ke-Yu et al 2006 Chin. Phys. Lett. 23 2985-2988 |
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Abstract Stimulated Raman scattering (SRS) of a third-harmonic beam of a high-power laser in air is analysed by using a perturbation approach. It is found that intensity modulations of the third-harmonic beam, resulting from the surface ripple of nonlinear crystal, can be significantly enhanced due to SRS, and the gain of instability increases with the spatial period of modulation. Numerical simulations based on the nonlinear coupled-wave equations verify the validity of the perturbation approach.
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42.65.Dr
42.65.Ky
04.25.Nx
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Published: 01 November 2006
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| PACS: |
42.65.Dr
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(Stimulated Raman scattering; CARS)
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42.65.Ky
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(Frequency conversion; harmonic generation, including higher-order harmonic generation)
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04.25.Nx
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(Post-Newtonian approximation; perturbation theory; related Approximations)
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