Beam combining and spectral linewidth narrowing of high-power, broad-area blue laser diode, and linear 1D array of diodes (447nm) via external cavity

P. R. Nyaupane; O. Spitz; G. Scranton; P. L. LiKamWa; Y. Braiman

doi:10.1117/12.2649237

15 March 2023 Beam combining and spectral linewidth narrowing of high-power, broad-area blue laser diode, and linear 1D array of diodes (447nm) via external cavity

P. R. Nyaupane, O. Spitz, G. Scranton, P. L. LiKamWa, Y. Braiman

Author Affiliations +

Proceedings Volume 12440, Novel In-Plane Semiconductor Lasers XXII; 124400K (2023) https://doi.org/10.1117/12.2649237
Event: SPIE OPTO, 2023, San Francisco, California, United States

Abstract

Blue diode and diode arrays became recently available commercially and offer a promise for high-power, excellent beam quality, compact and efficient light source for wide variety of applications including phototherapy, sanitization, underwater sensing and communication devices, and directed energy. Due to relatively recent availability on commercial market, these type of diodes and arrays have not yet been extensively studied, for example compared to their near-infrared counterparts. We experimentally investigated two external-cavity schemes involving single broad-area blue lasers and arrays of blue lasers. The feedback provided by a surface grating in Littrow configuration allowed demonstrations of spectral linewidth narrowing, wavelength tuning and paves the way towards locking of multiple diodes in a common external cavity for high-power applications.

Conference Presentation

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P. R. Nyaupane, O. Spitz, G. Scranton, P. L. LiKamWa, and Y. Braiman "Beam combining and spectral linewidth narrowing of high-power, broad-area blue laser diode, and linear 1D array of diodes (447nm) via external cavity", Proc. SPIE 12440, Novel In-Plane Semiconductor Lasers XXII, 124400K (15 March 2023); https://doi.org/10.1117/12.2649237

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