Generation of 40 W, 400 fs pulses at 1 MHz repetition rate from efficient, room temperature Yb:YAG double-pass amplifier seeded by fiber CPA system

L. Veselis; T. Bartulevicius; K. Madeikis; A. Michailovas

doi:10.1117/12.2545473

21 February 2020 Generation of 40 W, 400 fs pulses at 1 MHz repetition rate from efficient, room temperature Yb:YAG double-pass amplifier seeded by fiber CPA system

L. Veselis, T. Bartulevicius, K. Madeikis, A. Michailovas

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Proceedings Volume 11259, Solid State Lasers XXIX: Technology and Devices; 1125925 (2020) https://doi.org/10.1117/12.2545473
Event: SPIE LASE, 2020, San Francisco, California, United States

Abstract

In this work we presented a compact femtosecond high average power (35 W), high energy (35 uJ) and high pulse repetition rate (1 MHz) laser system based on efficient room-temperature Yb:YAG crystal rod double-pass power amplifier and Yb doped fiber seed laser. High fidelity nearly transform-limited pulses (330 fs) were obtained by using matched dispersion pair of chirped fiber Bragg grating (CFBG) as a pulse stretcher and 4-pass diffraction grating based pulse compressor. Residual dispersion mismatch was compensated by applying linear thermal gradient along CFBG. Presented laser system is a compact and convenient solution for various industrial and scientific applications.

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L. Veselis, T. Bartulevicius, K. Madeikis, and A. Michailovas "Generation of 40 W, 400 fs pulses at 1 MHz repetition rate from efficient, room temperature Yb:YAG double-pass amplifier seeded by fiber CPA system", Proc. SPIE 11259, Solid State Lasers XXIX: Technology and Devices, 1125925 (21 February 2020); https://doi.org/10.1117/12.2545473

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KEYWORDS

Optical amplifiers

Fiber amplifiers

Diffraction gratings

Crystals

Fiber lasers

Laser systems engineering

Semiconductor lasers

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