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Piezo-locking a diode laser with saturated absorption spectroscopy

  • J. E. Debs
  • , N. P. Robins
  • , A. Lance
  • , M. B. Kruger
  • , J. D. Close

Research output: Contribution to journalArticlepeer-review

Abstract

We demonstrate modulation-based frequency locking of an external cavity diode laser, utilizing a piezoelectrically actuated mirror, external to the laser cavity, to create an error signal from saturated absorption spectroscopy. With this method, a laser stabilized to a rubidium hyperfine transition has a FWHM of 130 kHz over seconds, making the locked laser suitable for experiments in atomic physics, such as creating and manipulating Bose-Einstein condensates. This technique combines the advantages of low-amplitude modulation, simplicity, performance, and price, factors that are usually considered to be mutually exclusive.

Original languageEnglish
Pages (from-to)5163-5166
Number of pages4
JournalApplied Optics
Volume47
Issue number28
DOIs
Publication statusPublished - 1 Oct 2008
Externally publishedYes

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