A comparative study of tapered fiber laser configurations

J. Kerttula; V. Filippov; Yu. Chamorovskii; V. Ustimchik; K. Golant; O. G. Okhotnikov

doi:10.1117/12.908147

15 February 2012 A comparative study of tapered fiber laser configurations

J. Kerttula, V. Filippov, Yu. Chamorovskii, V. Ustimchik, K. Golant, O. G. Okhotnikov

Proceedings Volume 8237, Fiber Lasers IX: Technology, Systems, and Applications; 82370W (2012) https://doi.org/10.1117/12.908147
Event: SPIE LASE, 2012, San Francisco, California, United States

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.

Citation Download Citation

J. Kerttula, V. Filippov, Yu. Chamorovskii, V. Ustimchik, K. Golant, and O. G. Okhotnikov "A comparative study of tapered fiber laser configurations", Proc. SPIE 8237, Fiber Lasers IX: Technology, Systems, and Applications, 82370W (15 February 2012); https://doi.org/10.1117/12.908147

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