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Optica Publishing Group
  • Journal of the Optical Society of Korea
  • Vol. 11,
  • Issue 3,
  • pp. 124-129
  • (2007)

Comparison of Fiber-Based Frequency Comb and Ti:Sapphire-Based Frequency Comb

Open Access Open Access

Abstract

For the first time we compare two kinds of optical frequency combs, one of which is based on a Ti:sapphire femtosecond laser and the other is based on a mode-locked erbium-doped fiber laser. The comparison is performed by measuring an optical frequency standard with these two combs simultaneously. The two frequency measurements agree within 1.8 Hz (<TEX>$3.8{\times}10^{-15}$</TEX>) with the uncertainty of 17.2 Hz (<TEX>$3.6{\times}10^{-14}$</TEX>), from which it can be concluded that the Ti:sapphire-based frequency comb and the fiber-based frequency comb have no systematic discrepancy at this level of uncertainty.

© 2007 Optical Society of Korea

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