Thulium- and holmium-doped high stability fiber amplifiers at 2 µm for next generation gravitational wave detectors

P. Baer; A. Elshani; M. Reiter; P. Cebeci; M. Giesberts; J. Ebert; M. Hoefer; D. Hoffmann

doi:10.1117/12.2649611

8 March 2023 Thulium- and holmium-doped high stability fiber amplifiers at 2 μm for next generation gravitational wave detectors

P. Baer, A. Elshani, M. Reiter, P. Cebeci, M. Giesberts, J. Ebert, M. Hoefer, D. Hoffmann

Author Affiliations +

Proceedings Volume 12400, Fiber Lasers XX: Technology and Systems; 124000J (2023) https://doi.org/10.1117/12.2649611
Event: SPIE LASE, 2023, San Francisco, California, United States

Abstract

Within the context of the E-TEST (Einstein Telescope EMR Site & Technology) project, Fraunhofer ILT develops thulium- and holmium-based seed sources and fiber lasers at app. 2 μm wavelength with highest demands on linewidth and stability for usage in a third-generation gravitational wave detector, the Einstein telescope. To fulfill the requirements, we develop a seed laser and a multi-stage fiber amplifier, consisting of holmium-doped fibers. Within this paper, we present our current laser concept and the first results of our dual-stage holmium-doped fiber amplifier stage. We achieve a low linewidth (< 2 MHz) output power of more than 5 W at a wavelength of 2095 nm. By using our in-house developed fiber laser simulation, we show that the efficiency of our amplifier is currently limited by pair induced quenching and the potential for further power scaling.

Conference Presentation

Citation Download Citation

P. Baer, A. Elshani, M. Reiter, P. Cebeci, M. Giesberts, J. Ebert, M. Hoefer, and D. Hoffmann "Thulium- and holmium-doped high stability fiber amplifiers at 2 μm for next generation gravitational wave detectors", Proc. SPIE 12400, Fiber Lasers XX: Technology and Systems, 124000J (8 March 2023); https://doi.org/10.1117/12.2649611

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