Highly collimated Gaussian-beam emission of VCSEL in the red spectral range at raised output power operation

Lena Engel; Farnaz Khamseh; Arina Farsian; Michael Zimmer; Michael Jetter; Peter Michler

doi:10.1117/12.3002535

13 March 2024 Highly collimated Gaussian-beam emission of VCSEL in the red spectral range at raised output power operation

Lena Engel, Farnaz Khamseh, Arina Farsian, Michael Zimmer, Michael Jetter, Peter Michler

Author Affiliations +

Proceedings Volume PC12904, Vertical-Cavity Surface-Emitting Lasers XXVIII; PC1290406 (2024) https://doi.org/10.1117/12.3002535
Event: SPIE OPTO, 2024, San Francisco, California, United States

Abstract

VCSELs emitting in the red spectral range are auspicious candidates for various applications, for example in biomedical utilization. However, their implementation is occasionally hampered especially due to the limited fiber coupling efficiency resulting from the beam divergence further increasing for higher power emission, where higher order transverse modes are emitted. Hence, the emission of a highly collimated Gaussian beam at raised output power is pursued in this work. The suppression of higher order modes through etched surface reliefs spatially modulating the reflectivity is investigated. To reduce the angle of divergence, polymer microlenses are integrated directly on the VCSEL surface.

Conference Presentation

Citation Download Citation

Lena Engel, Farnaz Khamseh, Arina Farsian, Michael Zimmer, Michael Jetter, and Peter Michler "Highly collimated Gaussian-beam emission of VCSEL in the red spectral range at raised output power operation", Proc. SPIE PC12904, Vertical-Cavity Surface-Emitting Lasers XXVIII, PC1290406 (13 March 2024); https://doi.org/10.1117/12.3002535

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