11 March 2016 High power, high signal-to-noise ratio single-frequency 1μm Brillouin all-fiber laser
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Abstract
We demonstrate a high-power, high signal-to-noise ratio single-frequency 1 μm Brillouin all-fiber laser with high slope efficiency. The Brillouin laser system consists of a high-power single-frequency fiber laser and a single-pass Brillouin ring cavity. The high-power single-frequency fiber laser is one-stage master-oscillator power amplifier with the maximum output power of 10.33 W, the signal-to-noise ratio of 50 dB and the slope efficiency of 46%. The Brillouin fiber laser is pumped by the amplified laser with a linewidth of 33 kHz and an output power of 2.61 W limited by the damage threshold of the optical isolator. By optimizing the length of the Brillouin ring cavity to 10 m, stable singlefrequency Brillouin fiber laser is obtained with 3 kHz linewidth owing to the linewidth narrowing effect. At the launched pump power of 2.15 W, the Brillouin fiber laser generates maximum output power of 1.4 W with a slope efficiency of 79% and the optical signal-to-noise ratio of 77 dB.
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Jing Wang, Jing Wang, Yubin Hou, Yubin Hou, Qian Zhang, Qian Zhang, Dongchen Jin, Dongchen Jin, Ruoyu Sun, Ruoyu Sun, Hongxing Shi, Hongxing Shi, Jiang Liu, Jiang Liu, Pu Wang, Pu Wang, "High power, high signal-to-noise ratio single-frequency 1μm Brillouin all-fiber laser", Proc. SPIE 9728, Fiber Lasers XIII: Technology, Systems, and Applications, 97281V (11 March 2016); doi: 10.1117/12.2212728; https://doi.org/10.1117/12.2212728
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