4.8mJ pulse energy directly from a single-mode Q-switched ytterbium fiber lasers

Monica T. Kalichevsky-Dong; Wenping Ge; Thomas W. Hawkins; Turghun Matniyaz; Liang Dong

doi:10.1117/12.2606254

4 March 2022 4.8mJ pulse energy directly from a single-mode Q-switched ytterbium fiber lasers

Monica T. Kalichevsky-Dong, Wenping Ge, Thomas W. Hawkins, Turghun Matniyaz, Liang Dong

Proceedings Volume 11981, Fiber Lasers XIX: Technology and Systems; 1198107 (2022) https://doi.org/10.1117/12.2606254
Event: SPIE LASE, 2022, San Francisco, California, United States

Abstract

Using an ytterbium-doped fiber with a 50 μm core and 0.028 NA, a pulse energy of 4.8 mJ was achieved directly from a single-mode Q-switched fiber laser. The repetition rate was 10 kHz and the average power was 48.4 W. The slope efficiencies with regard to the absorbed and launched pump power were ~74% and ~59% respectively. The pulse width decreased with increasing pump power. The 4.8 mJ pulse had a FWHM width of ~300 ns. A shorter pulse of ~200 ns FWHM was also achieved at 2.06 mJ in another configuration. The M² was below 1.3 at all pulse energies. This work demonstrates record pulse energy directly from a single-mode Q-switched fiber laser and the feasibility of operating such laser with high efficiencies.

Conference Presentation

Citation Download Citation

Monica T. Kalichevsky-Dong, Wenping Ge, Thomas W. Hawkins, Turghun Matniyaz, and Liang Dong "4.8mJ pulse energy directly from a single-mode Q-switched ytterbium fiber lasers", Proc. SPIE 11981, Fiber Lasers XIX: Technology and Systems, 1198107 (4 March 2022); https://doi.org/10.1117/12.2606254

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