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Applied Optics

Applied Optics


  • Editor: Joseph N. Mait
  • Vol. 48, Iss. 20 — Jul. 10, 2009
  • pp: 3938–3942

Frequency characteristics of an inherently stable Nd:YAG laser operated at liquid helium temperature

Matthias Scholz, Evgeny Kovalchuk, and Achim Peters  »View Author Affiliations

Applied Optics, Vol. 48, Issue 20, pp. 3938-3942 (2009)

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We report on frequency measurements of a free-running Nd:YAG laser operating at temperatures down to 6.5 K using a femtosecond laser frequency comb. Due to lower thermal expansion and thermo-optic effects as well as reduced electron–phonon interactions in Nd:YAG at cryogenic temperatures, a laser frequency stability on the order of 10 11 at τ 30 s has been achieved. Within a one-week measurement period, absolute frequency deviations were lower than 1.85 MHz . This is up to a 100-fold improvement of frequency stability compared to any existing free-running solid-state laser.

© 2009 Optical Society of America

OCIS Codes
(120.3940) Instrumentation, measurement, and metrology : Metrology
(140.3530) Lasers and laser optics : Lasers, neodymium

ToC Category:
Instrumentation, Measurement, and Metrology

Original Manuscript: May 12, 2009
Manuscript Accepted: June 17, 2009
Published: July 2, 2009

Matthias Scholz, Evgeny Kovalchuk, and Achim Peters, "Frequency characteristics of an inherently stable Nd:YAG laser operated at liquid helium temperature," Appl. Opt. 48, 3938-3942 (2009)

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