한국광학회지 (Korean Journal of Optics and Photonics)
- 제4권4호
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- Pages.434-441
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- 1993
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- 1225-6285(pISSN)
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- 2287-321X(eISSN)
단인 통과 라만레이저의 집속 조건에 따른 출력 특성
Focusing Geometry Dependence of Single Pass Raman Shifer
초록
단일 통과 라만레이저에서 접속 조건에 따른 1차 Stokes 파의 출력특성을 조사하였다. 펌푸빔으로는 Q-switched Nd-YAG 레이저의 기본파인 파장
Focusing geometry dependence of output Stokes energy in single pass methane Raman shifter is investigated. The experimental result shows that the threshold energy decreases as confocal parameter increases. This result can be explained by gain suppression caused by Stokes - anti-Stokes coupling. In this paper, we give simple analysis for the focusing geometry dependence of Stokes - anti-Stokes coupling and present the criterion of confocal parameter to reduce the gain suppression. Focusing geometry dependence of stimulated Brillouin scattering is measured and the result is in good agreement with theoretical prediction.
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