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Proceedings Paper

A comparative study of tapered fiber laser configurations
Author(s): J. Kerttula; V. Filippov; Yu. Chamorovskii; V. Ustimchik; K. Golant; O. G. Okhotnikov
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Paper Abstract

We present a comparative theoretical and experimental study of different schemes of fiber lasers with tapered doubleclad fiber (T-DCF) as an active medium. We have developed a theoretical model for obtaining the distribution of power and power density inside the fiber for the considered laser schemes with different longitudinal shapes of T-DCFs. The slope efficiencies, spectral characteristics, and beam quality deterioration associated with the mode conversion in the TDCF were also studied experimentally for different laser schemes. In addition, a spontaneous transition to a self-pulsing regime under certain conditions, and the associated problems have been investigated. Characteristics of T-DCF lasers constructed in co- and counter-propagating schemes are discussed and compared to those of regular fiber lasers, equivalent in active volume or in brightness.

Paper Details

Date Published: 16 February 2012
PDF: 9 pages
Proc. SPIE 8237, Fiber Lasers IX: Technology, Systems, and Applications, 82370W (16 February 2012); doi: 10.1117/12.908147
Show Author Affiliations
J. Kerttula, Tampere Univ. of Technology (Finland)
V. Filippov, Tampere Univ. of Technology (Finland)
Yu. Chamorovskii, Institute of Radio Engineering and Electronics (Russian Federation)
V. Ustimchik, Institute of Radio Engineering and Electronics (Russian Federation)
K. Golant, Institute of Radio Engineering and Electronics (Russian Federation)
O. G. Okhotnikov, Tampere Univ. of Technology (Finland)


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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