Stabilizing the frequency of femtosecond Ti:sapphire comb laser by a novel scheme

W. Y. Cheng, T. H. Wu, S. W. Huang, S. Y. Lin, C. M. Wu

Research output: Contribution to journalArticlepeer-review

14 Scopus citations


We demonstrated a novel scheme for scanning the absolute frequencies of a femtosecond Kerr-lens mode-locked Ti:sapphire laser with the repetition rate unaffected, where the carrier-envelop phase of the pulse was controlled by slightly shifting pump beam and the repetition rate was phase locked to a stable radio-frequency oscillator. Since it was the first time to stabilize the frequency of a mode-locked laser by referring directly to the frequency of cesium two-photon-transition (TPT) stabilized diode laser, we evaluated the frequency instability and the frequency accuracy that showed the characteristic of being a comb laser. The feature of the comb laser in this report will be significant for multi-photon spectroscopy where the frequency difference between comb lines plays a key role.

Original languageEnglish
Pages (from-to)13-18
Number of pages6
JournalApplied Physics B: Lasers and Optics
Issue number1
StatePublished - Jul 2008


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