High power VCSEL devices for atomic clock applications

L. S. Watkins; C. Ghosh; J.-F. Seurin; D. Zhou; G. Xu; B. Xu; A. Miglo

doi:10.1117/12.2187112

1 September 2015 High power VCSEL devices for atomic clock applications

L. S. Watkins, C. Ghosh, J.-F. Seurin, D. Zhou, G. Xu, B. Xu, A. Miglo

Author Affiliations +

Proceedings Volume 9616, Nanophotonics and Macrophotonics for Space Environments IX; 96160J (2015) https://doi.org/10.1117/12.2187112
Event: SPIE Optical Engineering + Applications, 2015, San Diego, California, United States

Abstract

We are developing VCSEL technology producing >100mW in single frequency at wavelengths 780nm, 795nm and 850nm. Small aperture VCSELs with few mW output have found major applications in atomic clock experiments. Using an external cavity three-mirror configuration we have been able to operate larger aperture VCSELs and obtain >70mW power in single frequency operation.

The VCSEL has been mounted in a fiber pigtailed package with the external mirror mounted on a shear piezo. The package incorporates a miniature Rb cell locker to lock the VCSEL wavelength. This VCSEL operates in single frequency and is tuned by a combination of piezo actuator, temperature and current. Mode-hop free tuning over >30GHz frequency span is obtained. The VCSEL has been locked to the Rb D2 line and feedback control used to obtain line-widths of <100kHz.

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L. S. Watkins, L. S. Watkins, C. Ghosh, C. Ghosh, J.-F. Seurin, J.-F. Seurin, D. Zhou, D. Zhou, G. Xu, G. Xu, B. Xu, B. Xu, A. Miglo, A. Miglo, } "High power VCSEL devices for atomic clock applications", Proc. SPIE 9616, Nanophotonics and Macrophotonics for Space Environments IX, 96160J (1 September 2015); doi: 10.1117/12.2187112; https://doi.org/10.1117/12.2187112

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