Presentation
1 April 2022 Mid-IR broad area angled cavity diode lasers
Author Affiliations +
Abstract
Broad area diode lasers can effectively scale power, but suffer from degraded beam quality largely due to filamentation in a Fabry- Pérot cavity. Angled cavity waveguide has been proven to be able to suppress filamentation, but some high order modes still exist in the mid-IR angled cavity diode lasers we have fabricated recently. We discovered that removing certain regions that don’t contribute gain to the fundamental mode will shift mode competition toward the fundamental mode. Laser devices with such a modified angled cavity waveguide exhibit improved beam quality, and demonstrate a ~2 fold brightness enhancement to their Fabry-Pérot counterparts.
Conference Presentation
© (2022) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Chi Yang, Matthew Suttinger, Alan H. Paxton, Chunte A. Lu, and Ron Kaspi "Mid-IR broad area angled cavity diode lasers", Proc. SPIE PC11987, Laser Resonators, Microresonators, and Beam Control XXIV, PC119870S (1 April 2022); https://doi.org/10.1117/12.2614806
Advertisement
Advertisement
KEYWORDS
Mid-IR

Semiconductor lasers

Waveguides

Broad area laser diodes

Back to Top