Design and characterisation of VCSELs for atomic sensor applications

Samuel Shutts; Curtis Hentschel; Sara-Jayne Gillgrass; James Meiklejohn; Craig P. Allford; Jack Baker; Josie Nabialek; Denise Powell; Witold Chalupczak; Mohsin Haji; Wyn Meredith; Peter Smowton

doi:10.1117/12.2650495

17 March 2023 Design and characterisation of VCSELs for atomic sensor applications

Samuel Shutts, Curtis Hentschel, Sara-Jayne Gillgrass, James Meiklejohn, Craig P. Allford, Jack Baker, Josie Nabialek, Denise Powell, Witold Chalupczak, Mohsin Haji, Wyn Meredith, Peter Smowton

Author Affiliations +

Proceedings Volume PC12439, Vertical-Cavity Surface-Emitting Lasers XXVII; PC1243907 (2023) https://doi.org/10.1117/12.2650495
Event: SPIE OPTO, 2023, San Francisco, California, United States

Abstract

We report on the epi-design and characterisation of VCSELs for atomic sensors, including miniaturised clocks and magnetometers. To understand how epi-design impacts device performance and separate this from effects of growth and fabrication, we employ techniques to study the interplay between optically-active gain medium and the cavity-resonance. We experimentally determine the net modal-gain spectrum of VCSEL material using a single-pass stripe-length method covering the range of pumping and hence gain requirements of VCSELs. This is compared to photovoltage spectroscopic measurements, which are used to determine the quantum well transition energies and cavity resonance, aiding further optimisation of device design.

Conference Presentation

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Samuel Shutts, Curtis Hentschel, Sara-Jayne Gillgrass, James Meiklejohn, Craig P. Allford, Jack Baker, Josie Nabialek, Denise Powell, Witold Chalupczak, Mohsin Haji, Wyn Meredith, and Peter Smowton "Design and characterisation of VCSELs for atomic sensor applications", Proc. SPIE PC12439, Vertical-Cavity Surface-Emitting Lasers XXVII, PC1243907 (17 March 2023); https://doi.org/10.1117/12.2650495

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