title: Complete chirp analysis of a gain-switched pulse using an interferometric two-photon absorption autocorrelation.
abstract: We propose a simple but powerful scheme for the complete analysis of the frequency chirp of a gain-switched optical pulse using a fringe-resolved interferometric two-photon absorption autocorrelator. A frequency chirp imposed on the gain-switched pulse from a laser diode was retrieved from both the intensity autocorrelation trace and the envelope of the second-harmonic interference fringe pattern. To verify the accuracy of the proposed phase retrieval method, we have performed an optical pulse compression experiment by using dispersion-compensating fibers with different lengths. We have obtained close agreement by less than a 1% error between the compressed pulse widths and numerically calculated pulse widths.
authors.affiliation: Department of Information and Communications, Gwanju Institute of Science and Technology, Gwangju, South Korea.
authors.forename: Sang Hoon
authors.initials: SH
authors.lastname: Chin
authors.forename: Young Jae
authors.initials: YJ
authors.lastname: Kim
authors.forename: Ho Seong
authors.initials: HS
authors.lastname: Song
authors.forename: Dug Young
authors.initials: DY
authors.lastname: Kim