Frequency doubling of a Raman fiber laser
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- Kablukov, S.I., Babin, S.A., Churkin, D.V. et al. Laser Phys. (2010) 20: 365. doi:10.1134/S1054660X10030096
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655 nm laser radiation with power of >60 mW is generated by frequency doubling of a broadband randomly-polarized 1.31-μm phosphosilicate Raman fiber laser (RFL). The red power appears to grow linearly with increasing RFL power up to 7 W at efficiency comparable with that for single-frequency lasers. It has been shown that multiple sum-frequency mixing processes involving different RFL modes provide the main contribution to the output, which is enhanced by 2 times due to the modes stochasticity.