Improving transverse mode quality of broad area quantum cascade lasers

M. Suttinger; R. Go; C. Lu

doi:10.1117/12.3001143

13 March 2024 Improving transverse mode quality of broad area quantum cascade lasers

M. Suttinger, R. Go, C. Lu

Proceedings Volume 12905, Novel In-Plane Semiconductor Lasers XXIII; 129050S (2024) https://doi.org/10.1117/12.3001143
Event: SPIE OPTO, 2024, San Francisco, California, United States

Abstract

Results of novel broad area QCL waveguides fabricated at Air Force Research Laboratory are discussed. An “ultrawide” Fabry-Perot waveguide design is modified to bring the waveguide mode closer to the electrical contact and splitting said contact into a Dual Contact Strip. The mode quality in the fabricated ultrawide device is rectified to fundamental-like behavior. Overlapped angled cavity waveguides with a low tilt angle, interrupted with “notches” etched out of areas far from the internal beam path of the fundamental mode, are designed and fabricated. The beam quality of the overlapped angled cavity array demonstrates coherence between outputs.

Conference Presentation

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

Citation Download Citation

M. Suttinger, R. Go, and C. Lu "Improving transverse mode quality of broad area quantum cascade lasers", Proc. SPIE 12905, Novel In-Plane Semiconductor Lasers XXIII, 129050S (13 March 2024); https://doi.org/10.1117/12.3001143

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