Modulation-free laser frequency stabilization to a saturated sub-Doppler spectral line in a transversal magnetic field

Sho Okubo, Kana Iwakuni, Taro Hasegawa

Research output: Contribution to journalArticle

5 Citations (Scopus)

Abstract

We demonstrate frequency stabilization of a modulation-free laser to a saturated absorption spectral line of atoms in a transversal magnetic field. This stabilization scheme has been proposed for wide capture range in comparison with the dichroic atomic vapor laser lock (DAVLL) scheme and demonstrated for a Doppler-broadened spectral line in J. Opt. Soc. Am. B, 26, 1216 (2009). In this paper, a 1083-nm external-cavity laser diode is frequency-stabilized to the sub-Doppler spectral line of helium transition (2 3S1, mJ=0↔2 3P0). Even though the error signal shape strongly depends on the pump beam polarization, the stabilized frequency is expected to be insensitive to the pump beam polarization.

Original languageEnglish
Pages (from-to)4107-4111
Number of pages5
JournalOptics Communications
Volume285
Issue number20
DOIs
Publication statusPublished - 2012 Sep 15

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Keywords

  • Laser frequency stabilization
  • Saturation spectroscopy
  • Zeeman shift

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Electrical and Electronic Engineering
  • Atomic and Molecular Physics, and Optics
  • Physical and Theoretical Chemistry

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