Strong optical linewidth narrowing through surface grating feedback in two different blue laser diodes configurations

Olivier Spitz; Parashu Nyaupane; Gregg Scranton; Patrick LiKamWa; Yehuda Braiman

doi:10.1117/12.2663797

15 June 2023 Strong optical linewidth narrowing through surface grating feedback in two different blue laser diodes configurations

Olivier Spitz, Parashu Nyaupane, Gregg Scranton, Patrick LiKamWa, Yehuda Braiman

Author Affiliations +

Proceedings Volume 12515, Laser Technology for Defense and Security XVIII; 1251503 (2023) https://doi.org/10.1117/12.2663797
Event: SPIE Defense + Commercial Sensing, 2023, Orlando, Florida, United States

Abstract

High-power, narrow-linewidth blue laser sources with excellent beam quality are important for wide variety of applications including directed energy and underwater communication and sensing. Achieving narrow spectral linewidth from high-power blue semiconductor diode arrays is still a challenge. Our experimental efforts focused on two external cavity schemes involving single broad-area blue diodes and arrays of high-power blue diodes. We demonstrated narrowing the linewidth down to a few dozens of pm. The center wavelength of this narrow optical mode was tunable in the range of several nm and tunability was controlled by the angle of the surface grating providing optical feedback.

Conference Presentation

Citation Download Citation

Olivier Spitz, Parashu Nyaupane, Gregg Scranton, Patrick LiKamWa, and Yehuda Braiman "Strong optical linewidth narrowing through surface grating feedback in two different blue laser diodes configurations", Proc. SPIE 12515, Laser Technology for Defense and Security XVIII, 1251503 (15 June 2023); https://doi.org/10.1117/12.2663797

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