Distributed Feedback Lasers for Quantum Cooling Applications

Watson, S. et al. (2020) Distributed Feedback Lasers for Quantum Cooling Applications. In: 22nd International Conference on Transparent Optical Networks (ICTON), Bari, Italy, 19-23 July 2020, ISBN 9781728184241 (doi: 10.1109/ICTON51198.2020.9203200)

Abstract

There is an ever-growing need for compact sources which can be used for the cooling process in high accuracy atomic clocks. Current systems make use of large, expensive lasers which are power-hungry and often require frequency doubling in order to hit the required wavelengths. Distributed feedback (DFB) lasers have been fabricated at a number of key wavelengths which would allow chip scale atomic devices with very high accuracy to become a reality. Two key atomic transitions analysed here are 88 Sr + and 87 Rb which require cooling at 422 nm and 780.24 nm, respectively. The vital parameter of the DFB lasers for this application is the linewidth, as very narrow linewidths are required in order for the atomic cooling process to occur. The lasers realised here produce the required power levels, with high side-mode suppression ratios and show good single mode tuning which is important for hitting precise wavelengths. This work will present the latest techniques and results using the DFB lasers at both wavelengths.

• Item Type: Conference Proceedings
• Status: Published
• Refereed: Yes
• Glasgow Author(s) Enlighten ID: Kelly, Professor Anthony and Watson, Dr Scott and Gwyn, Mr Steffan and Paul, Professor Douglas and McBrearty, Dr Euan and Di Gaetano, Dr Eugenio and Sorel, Professor Marc
• Authors: Watson, S., Gwyn, S., Di Gaetano, E., McBrearty, E., Slight, T. J., Knapp, M., Stanczyk, S., Grzanka, S., Yadav, A., Docherty, K. E., Rafailov, E., Perlin, P., Najda, S., Leszczynski, M., Haji, M., Sorel, M., Paul, D. J., and Kelly, A. E.
• College/School: College of Science and Engineering > School of Engineering; College of Science and Engineering > School of Engineering > Electronics and Nanoscale Engineering
• ISSN: 2162-7339
• ISBN: 9781728184241
• Copyright Holders: Copyright © 2020 IEEE
• Publisher Policy: Reproduced in accordance with the copyright policy of the publisher