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Proceedings Paper

Investigation on the stimulated Brillouin scattering threshold with broadband KrF laser
Author(s): Chao Wang; Zhiwei Lu; Dianyang Lin; Xiaohui Wang; Xiuzhang Tang; Haifen Zhang; Yusheng Shan
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Paper Abstract

A 1.5m long cell, different focusing lens, a KrF laser which bandwidth is 0.5cm-1, and SF6 gas as Brillouin medium are used in the experiment. The influences of focus length and SF6 pressure on threshold of stimulated Brillouin scattering excited by broadband KrF laser were investigated, respectively. The SBS threshold increases with increasing of the focus length and decreasing of the SF6 pressure. The results show that the threshold of broadband SBS is various with the different focus length and SF6 pressure. For more precisely to explain the experimental results, a novel model considering optical breakdown and pump linewidth was presented. The model we proposed here assumes that the KrF laser spectrum is made up of a seriues of narrowband spectra, each generating one Stokes wave. In addition, it is assumed further that the neighbors of one narrowband spectrum also contribute to the generation of its corresponding Stokes wave to some degree. Optical breakdown is assumed to lead to the loss of pumping energy only. The experimental results are consistent with the numerical theory.

Paper Details

Date Published: 8 June 2005
PDF: 4 pages
Proc. SPIE 5851, Fundamental Problems of Optoelectronics and Microelectronics II, (8 June 2005); doi: 10.1117/12.633901
Show Author Affiliations
Chao Wang, Harbin Institute of Technology (China)
Zhiwei Lu, Harbin Institute of Technology (China)
Dianyang Lin, Harbin Institute of Technology (China)
Xiaohui Wang, Harbin Institute of Technology (China)
Xiuzhang Tang, China Institute of Atomic Energy (China)
Haifen Zhang, China Institute of Atomic Energy (China)
Yusheng Shan, China Institute of Atomic Energy (China)


Published in SPIE Proceedings Vol. 5851:
Fundamental Problems of Optoelectronics and Microelectronics II

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