19 February 2018 High-power fiber-coupled pump lasers for fiber lasers
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Proceedings Volume 10514, High-Power Diode Laser Technology XVI; 105140J (2018) https://doi.org/10.1117/12.2288139
Event: SPIE LASE, 2018, San Francisco, California, United States
Abstract
We present high-power fiber-coupled pump modules utilized effectively for ultra-high power single-mode (SM) fiber lasers. Maximum output power of 392 W was achieved at 23 A for 915 nm pump, and 394 W for 976 nm pump. Fiber core diameter is 118 μm and case temperature is 25deg. C. Polarization multiplexing technique was newly applied to our optical system. High-reliability of the laser diodes (LD) at high-power operation has been demonstrated by aging tests. Advanced package structure was developed that manages uncoupled light around input end of the fiber. 800 hours continuous drive with uncoupled light power of 100 W has been achieved.
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Yohei Kasai, Yohei Kasai, Takuya Aizawa, Takuya Aizawa, Daiichiro Tanaka, Daiichiro Tanaka, } "High-power fiber-coupled pump lasers for fiber lasers", Proc. SPIE 10514, High-Power Diode Laser Technology XVI, 105140J (19 February 2018); doi: 10.1117/12.2288139; https://doi.org/10.1117/12.2288139
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