Uncooled pump combiners for fiber laser and amplifier systems

L. Bansal; R. Sienkowski; C. Neale; J. Mann; C. Headley

doi:10.1117/12.2289972

20 February 2018 Uncooled pump combiners for fiber laser and amplifier systems

L. Bansal, R. Sienkowski, C. Neale, J. Mann, C. Headley

Proceedings Volume 10513, Components and Packaging for Laser Systems IV; 105130V (2018) https://doi.org/10.1117/12.2289972
Event: SPIE LASE, 2018, San Francisco, California, United States

Abstract

In this work we demonstrate a high transmission pump combiner that can operate uncooled at a maximum power of 400W for a continuous duration of 100hrs. The 7x1 pump combiner has seven 105/125 μm diameter 0.22 NA input pump fibers and a 247 μm diameter and 0.22 NA glass clad output fiber. The combiner has a high, 99%, pump transmission efficiency. These devices withstand without failure, a series of environmental stress tests, namely Thermal Cycling (-40 to 85ºC) and Damp Humidity (85ºC/85RH). These tests are conducted to uncover any latent defects in the device structure. The combiner’s also survive an elevated temperature of 75ºC at a power of 365W for duration of 5hrs, without any noticeable change in pump transmission.

Conference Presentation

Citation Download Citation

L. Bansal, R. Sienkowski, C. Neale, J. Mann, and C. Headley "Uncooled pump combiners for fiber laser and amplifier systems", Proc. SPIE 10513, Components and Packaging for Laser Systems IV, 105130V (20 February 2018); https://doi.org/10.1117/12.2289972

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