Di Gaetano, E. , Watson, S. , McBrearty, E. , Sorel, M. and Paul, D.J. (2020) Sub-MHz linewidth 780.24 nm distributed feedback laser for ⁸⁷Rb applications. Optics Letters, 45(13), pp. 3529-3532. (doi: 10.1364/OL.394185)
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Abstract
A distributed feedback GaAs-based semiconductor laser with a laterally coupled grating is demonstrated at a wavelength of 780.24 nm with up to 60 mW power. A mode expander and aluminum-free active layers have been used to reduce the linewidth to 612 kHz while maintaining high output power. The laser demonstrates over 40 dB side-mode suppression ratio with >0.3nm of tuning suitable for atom cooling experiments with the D2 87Rb atomic transition. This laser has substantial potential to be integrated into miniaturized cold atom systems.
| Item Type: | Articles |
|---|---|
| Status: | Published |
| Refereed: | Yes |
| Glasgow Author(s) Enlighten ID: | Watson, Dr Scott and Paul, Professor Douglas and McBrearty, Dr Euan and Di Gaetano, Dr Eugenio and Sorel, Professor Marc |
| Authors: | Di Gaetano, E., Watson, S., McBrearty, E., Sorel, M., and Paul, D.J. |
| College/School: | College of Science and Engineering > School of Engineering > Electronics and Nanoscale Engineering |
| Journal Name: | Optics Letters |
| Publisher: | Optical Society of America |
| ISSN: | 0146-9592 |
| ISSN (Online): | 1539-4794 |
| Published Online: | 24 June 2020 |
| Copyright Holders: | Copyright © 2020 Optical Society of America |
| First Published: | First published in Optics Letters 45(13): 3529-3532 |
| Publisher Policy: | Reproduced under a Creative Commons License |
| Data DOI: | 10.5525/gla.researchdata.1021 |
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