Sub-500 fs high power quasimonolithic FCPA laser using an all-solid step-index flexible PM VLMA Yb-doped fiber amplifier

Tristan Guezennec; Laurent Provino; Eric Lallier; Olivier Le Goffic; David Landais; Achille Monteville; Thierry Taunay; Adil Haboucha

doi:10.1117/12.2624096

19 May 2022 Sub-500 fs high power quasimonolithic FCPA laser using an all-solid step-index flexible PM VLMA Yb-doped fiber amplifier

Tristan Guezennec, Laurent Provino, Eric Lallier, Olivier Le Goffic, David Landais, Achille Monteville, Thierry Taunay, Adil Haboucha

Author Affiliations +

Proceedings Volume 12140, Micro-Structured and Specialty Optical Fibres VII; 1214007 (2022) https://doi.org/10.1117/12.2624096
Event: SPIE Photonics Europe, 2022, Strasbourg, France

Abstract

We report on the design of a quasi-monolithic fiber chirped pulse amplification (FCPA) system operating at 1040 nm. Chirped-pulse amplification has been achieved using an all-solid step-index PM VLMA Yb-doped fiber, designed and drawn at Photonics Bretagne. The amplifier is integrated to the system through an internally developed mode field adapter (MFA), and bended with a 14 cm diameter, giving a truly single-mode behavior. 540 fs pulses are obtained without any fiber length optimization. An average power of 50 W has been achieved at the fundamental repetition rate of the laser, but also energies up to 41 µJ per pulse at lower repetition rate, pump power limited. The pulses are stretched using a thermally–controlled tunable chirped fibered Bragg grating (CFBG), allowing fine dispersion tuning, and compressed using a chirped volume Bragg grating (CVBG).

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Citation Download Citation

Tristan Guezennec, Laurent Provino, Eric Lallier, Olivier Le Goffic, David Landais, Achille Monteville, Thierry Taunay, and Adil Haboucha "Sub-500 fs high power quasimonolithic FCPA laser using an all-solid step-index flexible PM VLMA Yb-doped fiber amplifier", Proc. SPIE 12140, Micro-Structured and Specialty Optical Fibres VII, 1214007 (19 May 2022); https://doi.org/10.1117/12.2624096

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