title: Carrier-envelope phase shift caused by variation of grating separation.
abstract: The effects of variation of the grating separation in a stretcher on the carrier-envelope (CE) phase of amplified pulses are investigated. By translating one of the telescope mirrors in the stretcher with a piezoelectric transducer, it is found that a 1 mum change of the distance causes a 3.7+/-1.2 rad shift of the CE phase, which is consistent with theoretical estimations. The results indicate that optical mounts used for gratings and telescope mirrors must be interferometrically stable; otherwise their vibration and thermal drift will cause significant phase error. The CE phase drift was corrected by feedback controlling the grating separation.
authors.affiliation: J R Macdonald Laboratory, Department of Physics, Kansas State University, Manhattan, Kansas 66506, USA.
authors.forename: Chengquan
authors.initials: C
authors.lastname: Li
authors.forename: Eric
authors.initials: E
authors.lastname: Moon
authors.forename: Zenghu
authors.initials: Z
authors.lastname: Chang