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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 19, Iss. 15 — Jul. 18, 2011
  • pp: 14479–14486

Narrow-linewidth light source for a coherent Raman transfer of ultracold molecules

K. Aikawa, J. Kobayashi, K. Oasa, T. Kishimoto, M. Ueda, and S. Inouye  »View Author Affiliations

Optics Express, Vol. 19, Issue 15, pp. 14479-14486 (2011)

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We describe a tunable two-color CW light source sufficient for realizing a coherent Raman transfer between two molecular states that are more than 0.5 eV (120 THz) apart. The simultaneous frequency stabilization of 901 nm and 655 nm light was achieved by locking diode lasers to a single ultralow expansion cavity with dual wavelengths coating. By utilizing offset-locking and optical phase-locked loop (OPLL), we ensured a large mode-hop free tuning range (> 2 GHz). The obtained short term linewidth (<10 Hz) and the linear drift of frequency (65 mHz/s) were both sufficient to eliminate the influence of laser linewidths on the efficiency of coherent Raman transition.

© 2011 OSA

OCIS Codes
(020.1670) Atomic and molecular physics : Coherent optical effects
(140.2020) Lasers and laser optics : Diode lasers
(140.2050) Lasers and laser optics : Dye lasers
(140.3550) Lasers and laser optics : Lasers, Raman

ToC Category:
Atomic and Molecular Physics

Original Manuscript: May 26, 2011
Revised Manuscript: June 23, 2011
Manuscript Accepted: June 26, 2011
Published: July 13, 2011

K. Aikawa, J. Kobayashi, K. Oasa, T. Kishimoto, M. Ueda, and S. Inouye, "Narrow-linewidth light source for a coherent Raman transfer of ultracold molecules," Opt. Express 19, 14479-14486 (2011)

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