PM double-clad fibers for high-power lasers and amplifiers

Kanishka Tankala; Adrian Carter; David P. Machewirth; Julia Farroni; Jaroslaw Abramczyk; Upendra H. Manyam

doi:10.1117/12.501679

3 July 2003 PM double-clad fibers for high-power lasers and amplifiers

Kanishka Tankala, Adrian Carter, David P. Machewirth, Julia Farroni, Jaroslaw Abramczyk, Upendra H. Manyam

Proceedings Volume 4974, Advances in Fiber Lasers; (2003) https://doi.org/10.1117/12.501679
Event: High-Power Lasers and Applications, 2003, San Jose, CA, United States

Abstract

Fibers for high-power laser and amplifier applications require large claddings with high numerical apertures for efficiently coupling pump energy. In addition, such fibers should have high rare-earth dopant concentrations in relatively large cores, with low numerical apertures, to reduce non-linearities. Furthermore, polarization maintaining double-clad fibers (PM-DCF) are needed for coherently combining the outputs of several lasers/amplifiers to achieve output powers in excess of 100 kW for military and industrial laser applications. In this paper, we report the progress made towards fabricating PM double-clad fibers, with a variety of fiber characteristics, to facilitate development and production of high-power lasers and amplifiers. In particular, a Panda-type PM-DCF with a 0.06 NA, 30 micron diameter, Yb-doped core is reported. We also discuss various criteria that are critical for designing these PM double clad fibers.

Citation Download Citation

Kanishka Tankala, Adrian Carter, David P. Machewirth, Julia Farroni, Jaroslaw Abramczyk, and Upendra H. Manyam "PM double-clad fibers for high-power lasers and amplifiers", Proc. SPIE 4974, Advances in Fiber Lasers, (3 July 2003); https://doi.org/10.1117/12.501679

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