100 fs pulses directly from a kW-class mJ-level ytterbium-doped fiber CPA laser system

Stark H, Buldt J, Mueller M, Klenke A, Limpert J (2021)

Publication Type: Conference contribution

Publication year: 2021

Journal

Proceedings of SPIE Society of Photo-optical Instrumentation Engineers (SPIE)

Publisher: SPIE

Book Volume: 11665

Conference Proceedings Title: Proceedings of SPIE - The International Society for Optical Engineering

Event location: Virtual, Online, USA

ISBN: 9781510641655

DOI: 10.1117/12.2579186

Abstract

We present a large-bandwidth high-power, high-energy fiber laser system based on coherent beam combination of 16 ytterbium-doped rod-type amplifiers. The CPA pulse stretching as well as extensive spectral shaping to counteract gain narrowing are implemented in a mostly fiber-integrated front end. A two-staged and partially helium-filled CPA grating compressor allows to compress the amplified pulses while maintaining a nearly diffraction-limited beam quality. Two laser operation regimes were investigated. The first one aimed for the shortest possible pulse duration, whereby 106 fs were reached at an average power of 910 W and a pulse energy of 910 µJ. In a second experiment, the primary aim of increasing the average power to 1 kW and the pulse energy to 10 mJ was successfully reached while the secondary objective, again being a minimum pulse duration, was optimized to 120 fs, posing a record value for fiber-CPA systems at this performance level.

Involved external institutions

Friedrich-Schiller-Universität Jena DE Germany (DE)

How to cite

APA:

Stark, H., Buldt, J., Mueller, M., Klenke, A., & Limpert, J. (2021). 100 fs pulses directly from a kW-class mJ-level ytterbium-doped fiber CPA laser system. In Michalis N. Zervas, Cesar Jauregui-Misas (Eds.), Proceedings of SPIE - The International Society for Optical Engineering. Virtual, Online, USA: SPIE.

MLA:

Stark, Henning, et al. "100 fs pulses directly from a kW-class mJ-level ytterbium-doped fiber CPA laser system." Proceedings of the Fiber Lasers XVIII: Technology and Systems 2021, Virtual, Online, USA Ed. Michalis N. Zervas, Cesar Jauregui-Misas, SPIE, 2021.

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