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Proceedings Paper

Study on the output characteristics of a large-core Yb-doped double clad fiber laser
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Paper Abstract

The output characteristics of a large-core double clad fiber (DCF) laser are experimentally investigated in this paper. The fiber laser is fabricated with 5m Yb-doped DCF that consists of a 30μm diameter core and a 400/340μm D-shape inner clad. The measured spectra show that the wavelength of laser is not stable at low pump levels, and the wavelength tends to be stabilized at 1074nm until the pump power is increased to a level far over the threshold. The maximum output power of 7.2W is obtained at an input pump of 11W with a FWHM of about 6nm. The slope efficiency and the total conversion efficiency are 84% and 65.5%, respectively.

Paper Details

Date Published: 26 January 2005
PDF: 8 pages
Proc. SPIE 5627, High-Power Lasers and Applications III, (26 January 2005); doi: 10.1117/12.574937
Show Author Affiliations
Hongxin Su, Hebei Univ. (China)
Qinglin Guo, Hebei Univ. (China)
Kecheng Lu, Nankai Univ. (China)

Published in SPIE Proceedings Vol. 5627:
High-Power Lasers and Applications III
Dianyuan Fan; Ken-ichi Ueda; Jongmin Lee, Editor(s)

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