Towards sub-100 fs multi-GW pulses directly emitted from a Thulium-doped fiber CPA system

C. Gaida; M. Gebhardt; F. Stutzki; C. Jauregui; J. Limpert; A. Tünnermann

doi:10.1117/12.2252390

22 February 2017 Towards sub-100 fs multi-GW pulses directly emitted from a Thulium-doped fiber CPA system

C. Gaida, M. Gebhardt, F. Stutzki, C. Jauregui, J. Limpert, A. Tünnermann

Proceedings Volume 10083, Fiber Lasers XIV: Technology and Systems; 100830C (2017) https://doi.org/10.1117/12.2252390
Event: SPIE LASE, 2017, San Francisco, California, United States

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.

Conference Presentation

Citation Download Citation

C. Gaida, M. Gebhardt, F. Stutzki, C. Jauregui, J. Limpert, and A. Tünnermann "Towards sub-100 fs multi-GW pulses directly emitted from a Thulium-doped fiber CPA system", Proc. SPIE 10083, Fiber Lasers XIV: Technology and Systems, 100830C (22 February 2017); https://doi.org/10.1117/12.2252390

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