Advance on the high-power and high-brightness diode laser modules for pumping and direct use applications

Liang Ding; Peng Liu; Huawei Chen; Liangjie Huang

doi:10.1117/12.3021538

12 March 2024 Advance on the high-power and high-brightness diode laser modules for pumping and direct use applications

Liang Ding, Peng Liu, Huawei Chen, Liangjie Huang

Proceedings Volume 12867, High-Power Diode Laser Technology XXII; 128670V (2024) https://doi.org/10.1117/12.3021538
Event: SPIE LASE, 2024, San Francisco, California, United States

Abstract

Industrial material processing represents a significant application for lasers. In this paper, we present our work on high power Diode Laser (DL) modules for the high brightness fiber laser pumping and direct diode laser integration. Together with state-of-the-art 915 nm and 976 nm Laser Diode (LD) single emitters from Coherent, we have realized an optical power 1200 W DL output (26 A driving current) with a 135 μm core-diameter fiber with a Numerical Aperture (NA) of 0.22 (power ratio of NA 0.19/0.22 ⪆95%). A dual wavelength combining technique was employed, yielding an fiber output brightness of 74 MW/(cm²•str). The fiber was end-capped to decrease the energy density on the optical coating. By adopting the same fiber end-capping optical coupling and wavelength combining techniques, a higher power DL module coupling 1800 W optical power into a 220 μm end-capped fiber was successfully fabricated. The module achieved a favorable balance between power and brightness, and its direct application potential was certified through spot welding of thin stainless-steel plates.

Conference Presentation

(2024) Published by SPIE. Downloading of the abstract is permitted for personal use only.

Citation Download Citation

Liang Ding, Peng Liu, Huawei Chen, and Liangjie Huang "Advance on the high-power and high-brightness diode laser modules for pumping and direct use applications", Proc. SPIE 12867, High-Power Diode Laser Technology XXII, 128670V (12 March 2024); https://doi.org/10.1117/12.3021538

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