Frequency control of a chirped-mirror-dispersion-controlled mode-locked Ti:Al2O3 laser for comparison between microwave and optical frequencies

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

doi:10.1117/12.424458

3 May 2001 Frequency control of a chirped-mirror-dispersion-controlled mode-locked Ti:Al₂O₃ laser for comparison between microwave and optical frequencies

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

Author Affiliations +

Proceedings Volume 4269, Laser Frequency Stabilization, Standards, Measurement, and Applications; (2001) https://doi.org/10.1117/12.424458
Event: Photonics West 2001 - LASE, 2001, San Jose, CA, United States

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 f_rep 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 f_CEO. 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 f_CEO.

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Kazuhiko Sugiyama, Atsushi Onae, Takeshi Ikegami, Sergey Slyusarev, Feng-Lei Hong, Kaoru Minoshima, Hirokazu Matsumoto, Jonathan C. Knight, William J. Wadsworth, and Philip St.J. Russell "Frequency control of a chirped-mirror-dispersion-controlled mode-locked Ti:Al₂O₃ laser for comparison between microwave and optical frequencies", Proc. SPIE 4269, Laser Frequency Stabilization, Standards, Measurement, and Applications, (3 May 2001); https://doi.org/10.1117/12.424458

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