High brightness tree-array quantum cascade lasers (QCLs)

Luke Milbocker; Enrique Sanchez; Hong Shu; Arkadiy Lyakh

doi:10.1117/12.3000535

13 March 2024 High brightness tree-array quantum cascade lasers (QCLs)

Luke Milbocker, Enrique Sanchez, Hong Shu, Arkadiy Lyakh

Proceedings Volume PC12905, Novel In-Plane Semiconductor Lasers XXIII; PC129050D (2024) https://doi.org/10.1117/12.3000535
Event: SPIE OPTO, 2024, San Francisco, California, United States

Abstract

We demonstrate phase-locked, high power, tree-array quantum cascade lasers based on ridge waveguides with near diffraction-limited beam quality from the single-emitter side at a wavelength of 8.6μm. Tree-arrays based on ridge waveguides are promising for power scaling of QCLs, and are simpler to fabricate than buried heterostructure waveguides. Understanding the fabrication sensitivity of ridge waveguide tree-array QCLs is important for assessing their viability for mass fabrication. An analysis of fabrication tolerance and guidelines for the design of efficient MMI couplers is presented.

Conference Presentation

Citation Download Citation

Luke Milbocker, Enrique Sanchez, Hong Shu, and Arkadiy Lyakh "High brightness tree-array quantum cascade lasers (QCLs)", Proc. SPIE PC12905, Novel In-Plane Semiconductor Lasers XXIII, PC129050D (13 March 2024); https://doi.org/10.1117/12.3000535

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