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Proceedings Paper

Frequency control of a chirped-mirror-dispersion-controlled mode-locked Ti:Al2O3 laser for comparison between microwave and optical frequencies
Author(s): Kazuhiko Sugiyama; Atsushi Onae; Takeshi Ikegami; Sergey Slyusarev; Feng-Lei Hong; Kaoru Minoshima; Hirokazu Matsumoto; Jonathan C. Knight; William J. Wadsworth; Philip St.J. Russell
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Paper Abstract

The use of an optical frequency comb generated by an ultrafast mode-locked laser has been realized as a promising method of the direct comparison between microwave and optical frequencies. We are currently investigating frequency control of a chirped-mirror-dispersion-controlled mode-locked Ti:Al2O3 laser. We stabilized the pulse repetition rate frep to a rf synthesizer locked to a cesium (Cs) clock to the Allan deviation of 4 X 10-12 in 1 s. We found that the position of the crystal, rotation of the chirped mirrors, and change of the pump-laser power can be used in controlling the carrier-envelope offset frequency fCEO. We extended the span of the comb to over one octave, i.e., from 530 nm to 1190 nm, at -20 dB using a photonic-crystal fiber made at the University of Bath. We are currently trying to measure the frequency of an iodine-stabilized Nd:YAG laser using a floating ruler of a f:2f frequency interval chain. We detected the self-referencing beat between the fundamental and second- harmonic frequencies of the comb, which will enable further precise comparison between microwave and optical frequencies through the control of the fCEO.

Paper Details

Date Published: 3 May 2001
PDF: 10 pages
Proc. SPIE 4269, Laser Frequency Stabilization, Standards, Measurement, and Applications, (3 May 2001); doi: 10.1117/12.424458
Show Author Affiliations
Kazuhiko Sugiyama, National Research Lab. of Metrology (Japan)
Atsushi Onae, National Research Lab. of Metrology (Japan)
Takeshi Ikegami, National Research Lab. of Metrology (Japan)
Sergey Slyusarev, National Research Lab. of Metrology (Japan)
Feng-Lei Hong, National Research Lab. of Metrology (Japan)
Kaoru Minoshima, National Research Lab. of Metrology (Japan)
Hirokazu Matsumoto, National Research Lab. of Metrology (Japan)
Jonathan C. Knight, Univ. of Bath (United Kingdom)
William J. Wadsworth, Univ. of Bath (United Kingdom)
Philip St.J. Russell, Univ. of Bath (United Kingdom)


Published in SPIE Proceedings Vol. 4269:
Laser Frequency Stabilization, Standards, Measurement, and Applications
John L. Hall; Jun Ye, Editor(s)

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