7-core Yb-doped fiber laser with femtosecond pulse inscribed fiber Bragg gratings

Alexey A. Wolf; Alexey G. Kuznetsov; Olga N. Egorova; Sergey L. Semjonov; Sergey A. Babin

doi:10.1117/12.2644066

28 December 2022 7-core Yb-doped fiber laser with femtosecond pulse inscribed fiber Bragg gratings

Alexey A. Wolf, Alexey G. Kuznetsov, Olga N. Egorova, Sergey L. Semjonov, Sergey A. Babin

Proceedings Volume 12310, Advanced Lasers, High-Power Lasers, and Applications XIII; 123101A (2022) https://doi.org/10.1117/12.2644066
Event: SPIE/COS Photonics Asia, 2022, Online Only

Conference Poster

Abstract

We report on the investigation of a 7-core Yb-doped fiber laser based on femtosecond pulse written fiber Bragg gratings. The fabricated FBG arrays are used as a complex high-reflective mirrors, whereas output coupling is provided by ~4% Fresnel reflection from the normally cleaved end of the fiber. At cladding pumping by a 976-nm laser diode, the cores generate independently with linear total power growth up to 33 W at 50 W pump power. The individual generation spectra slowly broaden to ~0.15 nm whereas net spectrum at maximum power is ~0.2 nm broad thus demonstrating high-power narrowband generation in multicore active fiber.

Citation Download Citation

Alexey A. Wolf, Alexey G. Kuznetsov, Olga N. Egorova, Sergey L. Semjonov, and Sergey A. Babin "7-core Yb-doped fiber laser with femtosecond pulse inscribed fiber Bragg gratings", Proc. SPIE 12310, Advanced Lasers, High-Power Lasers, and Applications XIII, 123101A (28 December 2022); https://doi.org/10.1117/12.2644066

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