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Proceedings Paper

Photonic crystal fiber pump combiner for high-peak power all-fiber thulium lasers
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Paper Abstract

We report on the performance of a prototype pump combiner for use with thulium-doped photonic crystal fiber (PCF). This platform is attractive for “all-fiber” high energy and high peak power laser sources at 2 μm. We will report on the performance of this integrated amplifier in comparison to free space amplification in Tm:PCF. In particular, we carefully look for spectral/temporal modulation resulting from multimode interference between fundamental and higher order transverse modes in the amplifier to evaluate this for ultrashort chirped pulse amplification. The slope efficiency for the all-fiber amplifier is 22.1 %, indicating the need for further improvement. However, an M2 < 1.07 demonstrates excellent beam quality, as well as amplified polarization extinction ratios of ~25 dB.

Paper Details

Date Published: 11 March 2014
PDF: 7 pages
Proc. SPIE 8961, Fiber Lasers XI: Technology, Systems, and Applications, 896133 (11 March 2014); doi: 10.1117/12.2041327
Show Author Affiliations
Alex Sincore, CREOL, The College of Optics and Photonics, Univ. of Central Florida (United States)
Jason Tafoya, Optical Engines, Inc. (United States)
Donald Sipes, Optical Engines, Inc. (United States)
Lasse Leick, NKT Photonics A/S (Denmark)
Lawrence Shah, CREOL, The College of Optics and Photonics, Univ. of Central Florida (United States)
Martin Richardson, CREOL, The College of Optics and Photonics, Univ. of Central Florida (United States)


Published in SPIE Proceedings Vol. 8961:
Fiber Lasers XI: Technology, Systems, and Applications
Siddharth Ramachandran, Editor(s)

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