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Optics Letters

Optics Letters


  • Editor: Anthony J. Campillo
  • Vol. 32, Iss. 19 — Oct. 1, 2007
  • pp: 2876–2878

Low-noise, tunable diode laser for ultra-high-resolution spectroscopy

K. Döringshoff, I. Ernsting, R.-H. Rinkleff, S. Schiller, and A. Wicht  »View Author Affiliations

Optics Letters, Vol. 32, Issue 19, pp. 2876-2878 (2007)

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We demonstrate the excellent spectral properties of a diode laser setup that combines good tunability with superb short-term frequency stability and controllability. It is based on merging two concepts, the diode laser with resonant optical feedback and the grating stabilized diode laser. To characterize the short-term performance we beat two essentially identical diode lasers and find a short-term linewidth of 11 kHz . Phase locking between these lasers is achieved with a servo bandwidth as small as 46 kHz , although an analog phase detector is used that requires subradian residual phase error. Despite small phase error detection range and small servo bandwidth, cycle-slip-free phase locking is accomplished for typically many 10 min , and the optical power is essentially contained in a spectral window of less than 20 mHz relative to the optical reference. Due to the excellent performance this laser concept is well suited for atomic or molecular coherence experiments, which require phase locking of different lasers to each other, and as part of a flywheel for optical clocks.

© 2007 Optical Society of America

OCIS Codes
(140.2020) Lasers and laser optics : Diode lasers
(140.3425) Lasers and laser optics : Laser stabilization

ToC Category:
Lasers and Laser Optics

Original Manuscript: August 6, 2007
Manuscript Accepted: August 22, 2007
Published: September 27, 2007

K. Döringshoff, I. Ernsting, R.-H. Rinkleff, S. Schiller, and A. Wicht, "Low-noise, tunable diode laser for ultra-high-resolution spectroscopy," Opt. Lett. 32, 2876-2878 (2007)

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