Sub-kHz-linewidth VECSELs for cold atom experiments
Moriya, Paulo Hisao and Singh, Yeshpal and Bongs, Kai and Hastie, Jennifer E. (2020) Sub-kHz-linewidth VECSELs for cold atom experiments. Optics Express, 28 (11). pp. 15943-15953. ISSN 1094-4087
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Abstract
We report and characterize sub-kHz linewidth operation of an AlGaInP-based VECSEL system suitable for addressing the narrow cooling transition of neutral strontium atoms at 689 nm. When frequency-stabilized to a standard air-spaced Fabry-Perot cavity (finesse 1000) via the Pound-Drever-Hall (PDH) technique, it delivers output power >150 mW in a circularly-symmetric single transverse mode with low frequency and intensity noise. The optical field was reconstructed from the frequency noise error signal via autocorrelation and the Wiener-Khintchine theorem, leading to an estimated linewidth of (125±2) Hz. Optical beat note measurements were performed against a commercial locked laser system and a second, almost identical, VECSEL system resulting in linewidths of 200 Hz and 160 Hz FWHM, respectively. To the best of our knowledge, this is the first demonstration of a VECSEL compatible with the narrowest of lines (few hundred Hz) used for cooling and trapping atoms and ions.
Creators(s): |
Moriya, Paulo Hisao ![]() ![]() | Item type: | Article |
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ID code: | 72345 |
Keywords: | cold atom experiments, sub-kHz-linewidth, VECSEL system, Physics, Atomic and Molecular Physics, and Optics |
Subjects: | Science > Physics |
Department: | Faculty of Science > Physics > Institute of Photonics Strategic Research Themes > Measurement Science and Enabling Technologies Technology and Innovation Centre > Photonics |
Depositing user: | Pure Administrator |
Date deposited: | 13 May 2020 13:05 |
Last modified: | 01 Jan 2021 13:36 |
URI: | https://strathprints.strath.ac.uk/id/eprint/72345 |
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