Residual pump light as a probe of self-pulsing instability in an ytterbium-doped fiber laser |
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Authors: | Li Jianlang Ueda Ken-ichi Musha Mitsuru Shirakawa Akira |
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Affiliation: | Institute for Laser Science, University of Electro-Communications, Tokyo, Japan. j_li@ils.uec.ac.jp |
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Abstract: | Self-pulsing instability in the ytterbium-doped fiber (YDF) laser is investigated with the pump-bypassed cavity configuration. The residual pump light acts as a probe of the intracavity dynamics, and the temporal behavior of the light shows correlations with the self-mode locking instability in the original cavity and the sustained self-pulsing instability in the modified cavity of the YDF laser. The results suggest that the interactions among stimulated emission, pump absorption and/or reabsorption could account for self-pulsing instability in the YDF laser. The pump-bypassed laser cavity configuration can be used to investigate the instabilities of various kinds of fiber lasers. |
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