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Proceedings Paper

Lasing in thulium doped polarizing photonic crystal fibers (PCF)
Author(s): Pankaj Kadwani; Norbert Modsching; R. Andrew Sims; Lasse Leick; Jes Broeng; Lawrence Shah; Martin Richardson
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Paper Abstract

We describe lasing in polarizing thulium doped PCF fiber for the first time. The ~4 m long fiber had 50/250 μm core/cladding diameters and hole-diameter to pitch ratio of 0.18. CW lasing was achieved by end pumping with a 793 nm diode in an oscillator configuration. Slope efficiencies of ~35 % have been obtained with single mode beam quality (M2 <1.15). The polarization extinction ratio (PER) was >13 dB without any intra-cavity polarizing elements. This fiber, with MFD of ~36 μm and ~5.8 dB/m cladding pump absorption, is an attractive option for high energy pulsed amplifiers in the 2 μm wavelength regime.

Paper Details

Date Published: 15 February 2012
PDF: 4 pages
Proc. SPIE 8237, Fiber Lasers IX: Technology, Systems, and Applications, 82372Z (15 February 2012); doi: 10.1117/12.909440
Show Author Affiliations
Pankaj Kadwani, CREOL, The College of Optics and Photonics, Univ. of Central Florida (United States)
Norbert Modsching, CREOL, The College of Optics and Photonics, Univ. of Central Florida (United States)
West Saxon Univ. of Applied Sciences (Germany)
R. Andrew Sims, CREOL, The College of Optics and Photonics, Univ. of Central Florida (United States)
Lasse Leick, NKT Photonics A/S (Denmark)
Jes Broeng, 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. 8237:
Fiber Lasers IX: Technology, Systems, and Applications
Eric C. Honea; Sami T. Hendow, Editor(s)

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