Littrow configuration tunable external cavity diode laser with narrowband emission at 448 nm

Khaled Gasmi; Abdulaziz Aljalal; Watheq Al-Basheer

doi:10.1117/12.3021900

20 June 2024 Littrow configuration tunable external cavity diode laser with narrowband emission at 448 nm

Khaled Gasmi, Abdulaziz Aljalal, Watheq Al-Basheer

Author Affiliations +

Proceedings Volume 13002, Semiconductor Lasers and Laser Dynamics XI; 130020P (2024) https://doi.org/10.1117/12.3021900
Event: SPIE Photonics Europe, 2024, Strasbourg, France

Conference Poster

Abstract

A single-mode external cavity diode laser (ECDL) emitting in the blue spectral region is developed. The ECDL, which uses a low-power Fabry-Perot laser diode, is designed in the Littrow configuration using a reflective holographic grating. The ECDL has a narrowband emission at 448 nm of 0.01 nm that coincides with a strong absorption cross-section of NO₂ gas molecule, tuning ranges of 4.0 nm just above the threshold and 0.2 nm at high injection current. A maximum output power of 60 mW and an efficiency of 80 % with respect to the Fabry-Perot laser diode in free-running condition are achieved. High stability of the laser system over many hours was also achieved with a fluctuation of less than 1 %.

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

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Khaled Gasmi, Abdulaziz Aljalal, and Watheq Al-Basheer "Littrow configuration tunable external cavity diode laser with narrowband emission at 448 nm", Proc. SPIE 13002, Semiconductor Lasers and Laser Dynamics XI, 130020P (20 June 2024); https://doi.org/10.1117/12.3021900

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