Abstract
We present an all-fiber 1150 nm Yb-doped fiber laser oscillator pumped by a 976 nm laser diode. To suppress amplified spontaneous emission and avoid parasitic laser oscillation, we propose a long-length gain fiber and a high-reflectivity output fiber Bragg grating in the fiber laser oscillator. The 1150 nm band single-mode fiber laser with output power of 20.5 W is demonstrated at room temperature. The optical-to-optical conversion efficiency ranges up to 51.6% at the maximum output. The central wavelength of the fiber laser oscillator is 1150.35 nm, and its 3 dB spectral width is 0.72 nm. No evidence of amplified spontaneous emission, residual pump light, or parasitic laser oscillation were observed in the experiments. The high-power 1150 nm fiber laser oscillator can be used as a pump source in the development of a 3 μm Ho-doped fiber laser.
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Chen, H., Shen, Y., Tao, M. et al. 1150 nm High-Power Fiber Laser Oscillator Pumped by 976 nm Laser Diode. J Russ Laser Res 37, 297–301 (2016). https://doi.org/10.1007/s10946-016-9575-7
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DOI: https://doi.org/10.1007/s10946-016-9575-7