Passively cooled pump signal combiners at 2.1 kW for fiber laser and amplifier systems

L. Bansal; R. Sienkowski; J. Pincha; S. Rosario; C. Neale; J. Mann; C. E. Headley III

doi:10.1117/12.2549728

21 February 2020 Passively cooled pump signal combiners at 2.1 kW for fiber laser and amplifier systems

L. Bansal, R. Sienkowski, J. Pincha, S. Rosario, C. Neale, J. Mann, C. E. Headley III

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Proceedings Volume 11260, Fiber Lasers XVII: Technology and Systems; 1126023 (2020) https://doi.org/10.1117/12.2549728
Event: SPIE LASE, 2020, San Francisco, California, United States

Abstract

In this work we demonstrate, a high brightness, high transmission Pump Signal Combiner (PSC) operating at 2.1 kW for 10 minutes mounted on a metal plate without running cooling water (Passively Cooled). The 6+1 to 1 PSC tested in this work has six 247 μm cladding diameter 0.22NA pump pigtails, a 10/125um signal pigtail and a 20/400um double clad output fiber. The combiners achieve a high pump transmission efficiency of 98%. During the passively cooled highpower test conducted at a power of 2.1 kW the maximum temperature recorded on the surface of the package was at a temperature of 38.5°C for 10min of power aging.

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L. Bansal, R. Sienkowski, J. Pincha, S. Rosario, C. Neale, J. Mann, and C. E. Headley III "Passively cooled pump signal combiners at 2.1 kW for fiber laser and amplifier systems", Proc. SPIE 11260, Fiber Lasers XVII: Technology and Systems, 1126023 (21 February 2020); https://doi.org/10.1117/12.2549728

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