A 100 W all-fiber linearly-polarized Yb-doped single-mode fiber laser at 1120 nm.

Optics express (2012-12-25)
Jianhua Wang, Jinmeng Hu, Lei Zhang, Xijia Gu, Jinbao Chen, Yan Feng
RESUMO

A 100 W-class all-fiber linearly-polarized single-mode fiber laser at 1120 nm with an optical efficiency of 50% was demonstrated. The laser consists of a 4.2 m long Yb-doped polarization maintaining fiber with a core diameter of 10 μm and a pair of FBGs written in matched passive fiber. Linearly polarized output with a polarization extinction ratio of 15 dB is achieved by a cavity that selects both wavelength and polarization. Pulsed operations with square shaped pulses varying from 100 μs to 1 ms duration are achieved without relaxation oscillation.

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