Stabilization and phase control of femtosecond Ti:sapphire laser with a repetition rate of 90MHz

Wei Zhang; Hainian Han; Peng Wang; Zhiyi Wei

doi:10.1117/12.725341

29 January 2007 Stabilization and phase control of femtosecond Ti:sapphire laser with a repetition rate of 90MHz

Wei Zhang, Hainian Han, Peng Wang, Zhiyi Wei

Proceedings Volume 6279, 27th International Congress on High-Speed Photography and Photonics; 62793X (2007) https://doi.org/10.1117/12.725341
Event: 27th International congress on High-Speed Photography and Photonics, 2006, Xi'an, China

Abstract

Carrier-enveloped phase controlled femtosecond laser has an important application in the absolute frequency measurement, which lead to a revolutionary progress in the frequency metrology. In this paper we will report a high stable optical frequency comb based on a 90MHz repetition rate Ti:sapphire laser, by using a photonic crystal fiber to broaden octave spanning spectrum and a self-reference technology to measure the offset frequency f_ceo, both the repetition rate f_rep and f_ceo are locked simultaneously to a cesium clock with phase lock loop (PLL) technology. For simultaneous stabilization of f_rep and f_ceo, two sets of phase-locked loop electronics are introduced to control separately the laser cavity length for f_rep with a PZT and the pump laser for f_ceo with an acoustic optics modulation (AOM) respectively. As the result, we stabilized the f_rep at a fluctuation within the order of μHz, and f_ceo is in the order of mHz, which support a frequency comb with an uncertainty of 10^-14.

Citation Download Citation

Wei Zhang, Hainian Han, Peng Wang, and Zhiyi Wei "Stabilization and phase control of femtosecond Ti:sapphire laser with a repetition rate of 90MHz", Proc. SPIE 6279, 27th International Congress on High-Speed Photography and Photonics, 62793X (29 January 2007); https://doi.org/10.1117/12.725341

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