132 W, 1.3 mJ, sub-two-cycle pulses at 1.8 μm wavelength

Ziyao Wang; Tobias Heuermann; Martin Gebhardt; Mathias Lenski; Philipp Gierschke; Robert Klas; Cesar Jauregui; Jens Limpert

doi:10.1117/12.2650282

8 March 2023 132 W, 1.3 mJ, sub-two-cycle pulses at 1.8 μm wavelength

Ziyao Wang, Tobias Heuermann, Martin Gebhardt, Mathias Lenski, Philipp Gierschke, Robert Klas, Cesar Jauregui, Jens Limpert

Author Affiliations +

Proceedings Volume 12400, Fiber Lasers XX: Technology and Systems; 1240016 (2023) https://doi.org/10.1117/12.2650282
Event: SPIE LASE, 2023, San Francisco, California, United States

Abstract

Few-cycle laser systems in the short-wavelength infrared (SWIR) region (from 1.4 μm to 3 μm) with high pulse energy and high average power have become increasingly impactful as driving sources for THz, midinfrared and soft X-ray generation with numerous subsequent applications. Compared with the well-established near-IR region, the longer wavelength enables higher conversion efficiency in the THz and midinfrared generation, and is considered as a favorable tradeoff between pushing the high harmonic generation phase matching cut-off up to the water window region (300 eV – 500 eV) while maintaining reasonable single emitter efficiency. In this contribution, we present our first results of the nonlinear post compression of a high-power ultrafast thulium-doped fiber laser output in a 1.05 m long rod-type hollow-core fiber filled with ~3 bar argon. With around 90 fs input pulse duration (FWHM) and 180 W input average power, the nonlinear compression stage delivers compressed pulses with a duration of 10.2 fs (FWHM), an average output power of 132 W. This corresponds to 1.3 mJ pulse energy at a repetition rate of 101 kHz and 1.64 cycles at a central wavelength of 1.87 μm. With this, we estimate a compressed pulse-peak power of about 80 GW, with an energy content of ~66% in the main feature. It is the highest average power mJ-class few-cycle source in the SWIR region reported to date. Featuring a unique combination of peak- and average- power with less than 2 cycle pulses, this laser source is highly interesting for nonlinear frequency conversion addressing THz, midinfrared and soft X-ray region.

Conference Presentation

Citation Download Citation

Ziyao Wang, Tobias Heuermann, Martin Gebhardt, Mathias Lenski, Philipp Gierschke, Robert Klas, Cesar Jauregui, and Jens Limpert "132 W, 1.3 mJ, sub-two-cycle pulses at 1.8 μm wavelength", Proc. SPIE 12400, Fiber Lasers XX: Technology and Systems, 1240016 (8 March 2023); https://doi.org/10.1117/12.2650282

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available