Towards sub-100 fs multi-GW pulses directly emitted from a Thulium-doped fiber CPA system
Gaida C, Gebhardt M, Stutzki F, Jauregui C, Limpert J, Tuennermann A (2017)
Publication Type: Conference contribution
Publication year: 2017
Journal
Publisher: SPIE
Book Volume: 10083
Conference Proceedings Title: Proceedings of SPIE - The International Society for Optical Engineering
Event location: San Francisco, CA, USA
ISBN: 9781510606074
DOI: 10.1117/12.2252390
Abstract
Experimental demonstrations of Tm-doped fiber amplifiers (typically in CW- or narrow-band pulsed operation) span a wavelength range going from about 1700 nm to well beyond 2000 nm. Thus, it should be possible to obtain a bandwidth of more than 100 nm, which would enable sub-100 fs pulse duration in an efficient, linear amplification scheme. In fact, this would allow the emission of pulses with less than 20 optical cycles directly from a Tm-doped fiber system, something that seems to be extremely challenging for other dopants in a fused silica fiber. In this contribution, we summarize the current development of our Thulium-doped fiber CPA system, demonstrate preliminary experiments for further scaling and discuss important design factors for the next steps. The current single-channel laser system presented herein delivers a pulse-peak power of 2 GW and a nearly transform-limited pulse duration of 200 fs in combination with 28.7 W of average power. Special care has been taken to reduce the detrimental impact of water vapor absorption by placing the whole system in a dry atmosphere housing (<0.1% rel. humidity) and by using a sufficiently long wavelength (1920-1980 nm). The utilization of a low-pressure chamber in the future will allow for the extension of the amplification bandwidth. Preliminary experiments demonstrating a broader amplification bandwidth that supports almost 100 fs pulse duration and average power scaling to < 100W have already been performed. Based on these results, a Tm-doped fiber CPA with sub-100 fs pulse duration, multi-GW pulse peak power and >100 W average power can be expected in the near future.
Involved external institutions
Germany (DE)How to cite
APA:
Gaida, C., Gebhardt, M., Stutzki, F., Jauregui, C., Limpert, J., & Tuennermann, A. (2017). Towards sub-100 fs multi-GW pulses directly emitted from a Thulium-doped fiber CPA system. In Ingmar Hartl, Craig A. Robin (Eds.), Proceedings of SPIE - The International Society for Optical Engineering. San Francisco, CA, USA: SPIE.
MLA:
Gaida, C., et al. "Towards sub-100 fs multi-GW pulses directly emitted from a Thulium-doped fiber CPA system." Proceedings of the Fiber Lasers XIV: Technology and Systems 2017, San Francisco, CA, USA Ed. Ingmar Hartl, Craig A. Robin, SPIE, 2017.
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