Mid-IR broad area angled cavity diode lasers

Chi Yang; Matthew Suttinger; Alan H. Paxton; Chunte A. Lu; Ron Kaspi

doi:10.1117/12.2614806

1 April 2022 Mid-IR broad area angled cavity diode lasers

Chi Yang, Matthew Suttinger, Alan H. Paxton, Chunte A. Lu, Ron Kaspi

Proceedings Volume PC11987, Laser Resonators, Microresonators, and Beam Control XXIV; PC119870S (2022) https://doi.org/10.1117/12.2614806
Event: SPIE LASE, 2022, San Francisco, California, United States

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

Citation Download Citation

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

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KEYWORDS

Mid-IR

Semiconductor lasers

Waveguides

Broad area laser diodes

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