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Proceedings Paper

Numerical modeling of all-fiber passively Q-switched fiber lasers
Author(s): Pavel Zahradnik; Pavel Peterka; Petr Vojtíšek; Pavel Honzátko
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Paper Abstract

Fiber lasers have been extensively studied thanks to their high output power, excellent characteristics of output beam, relative simplicity, reliability and other promising features. In the paper we present a numerical model of all-fiber passively Q-switched laser and experimental observations of Q-switched pulsed regime in all-fiber laser. Numerical model is based on finite difference method and enables to investigate various spatial and material configurations of both active and passive fibers used in the laser cavity. Different laser regimes (pulsed and continuous-wave) can be achieved by selection of proper input parameters. Numerical model enables us to evaluate optical power and population level distributions in spatial and time domain. Experimental realization of passively Q-switched fiber laser was verified using the laser setup consisting of Er-Yb co-doped active fiber and Tm-doped fiber as saturable absorber. Q-switched regime was observed out in linear (Fabry-Perot) configuration with 3 nm wide tunable bandpass filter (TBPF) for adjustment of spectral position of the Q-switched laser output wavelength.

Paper Details

Date Published: 18 December 2012
PDF: 7 pages
Proc. SPIE 8697, 18th Czech-Polish-Slovak Optical Conference on Wave and Quantum Aspects of Contemporary Optics, 86971L (18 December 2012); doi: 10.1117/12.2009668
Show Author Affiliations
Pavel Zahradnik, Czech Technical Univ. in Prague (Czech Republic)
Institute of Photonics and Electronics, Academy of Sciences CR, v.v.i. (Czech Republic)
Pavel Peterka, Institute of Photonics and Electronics of the ASCR, v.v.i. (Czech Republic)
Petr Vojtíšek, Czech Technical Univ. in Prague (Czech Republic)
Institute of Scientific Instruments of the ASCR, v.v.i. (Czech Republic)
Pavel Honzátko, Institute of Photonics and Electronics of the ASCR, v.v.i. (Czech Republic)


Published in SPIE Proceedings Vol. 8697:
18th Czech-Polish-Slovak Optical Conference on Wave and Quantum Aspects of Contemporary Optics
Jan Peřina; Libor Nozka; Miroslav Hrabovský; Dagmar Senderáková; Waclaw Urbańczyk; Ondrej Haderka; Libor Nožka, Editor(s)

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