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28 January 2005 Mode competition in Raman fiber lasers with two different Fabry-Perot cavities
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Experimental studies on the mode competition in CW fiber laser pumped Raman fiber lasers with two different F-P cavities are carried out. The first cavity consists of a dichroic mirror and a cleaved fiber end and the second of two dichroic mirrors. Results show that there is drastic competition in the first cavity and much less one in the second because of efficient lasing mode selection of two dichroic mirrors. Reasons for mode competition are analyzed. There are two main kinds of competition in the cavity: one exists between the 440cm-1 peak and the 490cm-1 peak in Raman scattering spectrum; and the other is related with long cavity and spatial hole burning. Output characteristic of the laser and probability of different mode wavelengths are also measured.
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Ge-guo Du, Hong-wei Li, Shuang-chen Ruan, Feng Luo, Hui-hui Lu, Ying Deng, and Qin Zhu "Mode competition in Raman fiber lasers with two different Fabry-Perot cavities", Proc. SPIE 5646, Nonlinear Optical Phenomena and Applications, (28 January 2005);

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