title: Relative carrier-envelope phase dynamics between passively synchronized Ti:sapphire and Cr:forsterite lasers.
abstract: We observed and measured the relative carrier-envelope phase difference per round trip between synchronized femtosecond Ti:sapphire and Cr:forsterite mode-locked lasers. The relative carrier-envelope phase slip was directly recorded by heterodyning of the Cr:forsterite laser with the supercontinuum from the Ti:sapphire laser. We also obtained another phase relation by superimposing the third harmonic of the Cr:forsterite laser with the second harmonic of the Ti:sapphire laser. In the latter case we obtained a stable beat signal with a signal-to-noise ratio larger than 30 dB and found a dependence of the beat frequency on the cavity length.
authors.forename: Zhiyi
authors.initials: Z
authors.lastname: Wei
authors.forename: Yohei
authors.initials: Y
authors.lastname: Kobayashi
authors.forename: Kenji
authors.initials: K
authors.lastname: Torizuka