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2. Self-pulsing in a 2 km single-mode fiber with the seed source broadened via WNS phase modulation

Author

Congwen Zha, Li Tenglong, Wanjing Peng, Ma Yi, Sun Yinhong, Kai Zhang, and Yanshan Wang

Subjects
Laser linewidth, Materials science, business.industry, Brillouin scattering, Amplifier, Fiber laser, Single-mode optical fiber, Physics::Optics, Optoelectronics, Fiber, Laser power scaling, business, Phase modulation
Abstract

The seed source with spectral linewidth broadening via phase modulation is potential to achieve the higher output power with effective SBS suppression. However, self-pulsing from the amplifier output is harmful. In this work, we study the self-pulsing characteristics in a long single-mode fiber with lower self-pulsing threshold instead of the high power amplifier. We provide a powerful experimental support for the self-pulsing mechanism in high-power narrow-linewidth fiber lasers, which is important for further output power scaling.

Published
2018

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