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Proceedings Paper

Spectroscopy of cold Strontium atoms with a sub-kHz linewidth AlGaInP semiconductor disk laser (Conference Presentation)
Author(s): Paulo Hisao Moriya; Shengnan Zhang; Peter J. Schlosser; Yeshpal Singh; Kai Bongs; Jennifer E. Hastie

Paper Abstract

We report recent progress in sub-kHz-linewidth operation of AlGaInP-based SDL systems designed for neutral Strontium optical clocks. Overall system performance is presented, including intensity, frequency and phase noise characterisation. Two almost identical SDLs, each with >150 mW output at 689 nm, were frequency locked and an optical beat note measurement produced a linewidth of 160 Hz with fractional frequency stability reaching below 2×〖10〗^(-15) for averaging times from 60-400 s. Spectroscopic measurements of a blue magneto-optical trap (MOT) of Strontium with one SDL resulted in a reduction of the atomic sample fluorescence and revealed Zeeman splitting of the 3P1 electronic level.

Paper Details

Date Published: 9 March 2020
Proc. SPIE 11263, Vertical External Cavity Surface Emitting Lasers (VECSELs) X, 112630D (9 March 2020); doi: 10.1117/12.2550564
Show Author Affiliations
Paulo Hisao Moriya, Univ. of Strathclyde (United Kingdom)
Shengnan Zhang, The Univ. of Birmingham (United Kingdom)
Peter J. Schlosser, Fraunhofer UK Ctr. for Applied Photonics (United Kingdom)
Yeshpal Singh, The Univ. of Birmingham (United Kingdom)
Kai Bongs, The Univ. of Birmingham (United Kingdom)
Jennifer E. Hastie, Univ. of Strathclyde (United Kingdom)

Published in SPIE Proceedings Vol. 11263:
Vertical External Cavity Surface Emitting Lasers (VECSELs) X
Jennifer E. Hastie, Editor(s)

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