We demonstrated single-shot measurements of spectral interference between a white-light continuum generated in a hollow-fiber and its second harmonic. The interference has information on the carrier-envelope phase of an input pulse to the fiber and the time delay of the blue wing of the continuum. By analyzing the observed spectral interference, we estimated shot-by-shot changes of the carrier-envelope phase. This method is useful for determining the carrier-envelope phase changes of a low-repetition-rate, high-intensity laser.
© 2001 Optical Society of America
(320.5520) Ultrafast optics : Pulse compression
(320.5550) Ultrafast optics : Pulses
(320.7090) Ultrafast optics : Ultrafast lasers
(320.7110) Ultrafast optics : Ultrafast nonlinear optics
(320.7140) Ultrafast optics : Ultrafast processes in fibers
Masayuki Kakehata, Hideyuki Takada, Yohei Kobayashi, Kenji Torizuka, Yoshihiko Fujihira, Tetsuya Homma, and Hideo Takahashi, "Single-shot measurement of carrier-envelope phase changes by spectral interferometry," Opt. Lett. 26, 1436-1438 (2001)