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Proceedings Paper

Dynamic gratings induced by mode instabilities in fiber lasers
Author(s): Pavel Peterka; Jan Aubrecht; Jakub Cajzl; Ondřej Podrazký; Filip Todorov; Ivan Kašík; Pavel Honzátko
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Paper Abstract

We review the results of investigation of a special mode of self-pulsing, longitudinal-mode-instability regime, so-called self-induced laser line sweeping. This description reflects the fact that the self-pulsing (in the form of self-sustained relaxation oscillations) coexists with a spectacular laser line drift with time. It is accompanied by creation of dynamic refractive index gratings along the active fiber in the laser cavity. Such gratings have pitch of less than a micrometer, defined by half of the wavelength of the laser mode responsible for the grating build-up. Although longitudinal mode instabilities in fiber lasers are known for a long time, the associated refractive index gratings were studied just recently. An estimation of reflectivity of the dynamics gratings in self-swept fiber lasers is given using numerical model.

Paper Details

Date Published: 18 December 2018
PDF: 6 pages
Proc. SPIE 10976, 21st Czech-Polish-Slovak Optical Conference on Wave and Quantum Aspects of Contemporary Optics, 109760H (18 December 2018); doi: 10.1117/12.2514458
Show Author Affiliations
Pavel Peterka, Institute of Photonics and Electronics of the CAS, v.v.i. (Czech Republic)
Jan Aubrecht, Institute of Photonics and Electronics of the CAS, v.v.i. (Czech Republic)
Jakub Cajzl, Institute of Photonics and Electronics of the CAS, v.v.i. (Czech Republic)
Univ. of Chemistry and Technology (Czech Republic)
Ondřej Podrazký, Institute of Photonics and Electronics of the CAS, v.v.i. (Czech Republic)
Filip Todorov, Institute of Photonics and Electronics of the CAS, v.v.i. (Czech Republic)
Ivan Kašík, Institute of Photonics and Electronics of the CAS, v.v.i. (Czech Republic)
Pavel Honzátko, Institute of Photonics and Electronics of the CAS, v.v.i. (Czech Republic)


Published in SPIE Proceedings Vol. 10976:
21st Czech-Polish-Slovak Optical Conference on Wave and Quantum Aspects of Contemporary Optics
Pavel Zemánek, Editor(s)

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