Sub-kHz-linewidth VECSELs for cold atom experiments

Paulo Hisao Moriya, Yeshpal Singh, Kai Bongs, Jennifer E. Hastie

Research output: Contribution to journalArticle

2 Downloads (Pure)


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.
Original languageEnglish
Pages (from-to)15943-15953
Number of pages11
JournalOptics Express
Issue number11
Publication statusPublished - 13 May 2020


  • cold atom experiments
  • sub-kHz-linewidth
  • VECSEL system



Data for: "Sub-kHz-linewidth VECSELs for cold atom experiments"

Moriya, P. (Creator), Singh, Y. (Other), Bongs, K. (Other) & Hastie, J. (Supervisor), University of Strathclyde, 29 Apr 2020


Research Output

  • 1 Conference contribution book

Sub-kHz linewidth VECSEL for cold atoms experiments

Moriya, P. H. & Hastie, J. E., 8 Nov 2018, Advanced Solid State Lasers 2018. Washingto, D.C.: Optical Society of America, 2 p.

Research output: Chapter in Book/Report/Conference proceedingConference contribution book

Open Access
5 Downloads (Pure)


  • 1 Visiting an external academic institution

University of Birmingham

Paulo Moriya (Visiting researcher)

3 Jun 201921 Jun 2019

Activity: Visiting an external institution typesVisiting an external academic institution

Cite this