Nonlinear compression for generation of high energy ultrashort pulses using an Yb-doped large mode area tapered fiber

V. Roy; L. Desbiens; M. Boivin; C. Paré; B. Labranche; P. Laperle; Y. Taillon

doi:10.1117/12.2290104

26 February 2018 Nonlinear compression for generation of high energy ultrashort pulses using an Yb-doped large mode area tapered fiber

V. Roy, L. Desbiens, M. Boivin, C. Paré, B. Labranche, P. Laperle, Y. Taillon

Author Affiliations +

Proceedings Volume 10512, Fiber Lasers XV: Technology and Systems; 105120Y (2018) https://doi.org/10.1117/12.2290104
Event: SPIE LASE, 2018, San Francisco, California, United States

Abstract

Nonlinear compression for generation of high energy ultrashort pulses using an Yb-doped large mode area tapered fiber is reported. Single-stage amplifier gain larger than 43 dB is achieved, with energy of seed pulses (35 ps, 200 kHz) boosted up to 50 μJ at the amplifier output. Spectral broadening induced by self-phase modulation is shown to take place advantageously along the larger end of the counter-pumped active tapered fiber, where the mode area scales beyond 1000 μm². Pulse durations as short as 1 ps and peak powers exceeding 16 MW are demonstrated thereafter using a chirped volume Bragg grating as a dispersive compressor. Efficient suppression of higher-order modes in the large mode area tapered fiber yields diffraction-limited output (M² < 1.2) for optimal pulse compression.

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V. Roy, L. Desbiens, M. Boivin, C. Paré, B. Labranche, P. Laperle, and Y. Taillon "Nonlinear compression for generation of high energy ultrashort pulses using an Yb-doped large mode area tapered fiber", Proc. SPIE 10512, Fiber Lasers XV: Technology and Systems, 105120Y (26 February 2018); https://doi.org/10.1117/12.2290104

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