Title :
Evaluation of intensity shape and phase change of light pulses with frequency chirp due to self-phase modulation
Author :
Yoshiyama, Hideki ; Shio, Yutaka ; Imaizumi, Atsuyuki ; Motoyama, Hideyuki ; Nakajima, Michito ; Tanaka, Shosaku ; Kobayashi, Hiroshi ; Watanabe, Akira ; Saito, Hiroshi
Author_Institution :
Dept. of Electron., Tottori Univ., Japan
fDate :
10/1/1989 12:00:00 AM
Abstract :
A method for evaluating ultrashort light pulses is proposed. The temporal shape and the time-dependent phase change of the pulses is determined using self-consistent iterative calculations based on experimental data of the second-harmonic intensity autocorrelation and the spectra of the pulses. The self-phase modulation originating from the optical Kerr effect (OKE) and/or the saturable effect in the absorber dye solution is taken into account, and two parameters, the amount and the recovery time of the OKE, are introduced into the calculation of the temporal shape and the phase change of the pulses. These two parameters are chosen to give the best agreement of experimental and calculated second-harmonic intensity autocorrelation and spectra. The calculated results determined the lower limits of the recovery time of the OKE
Keywords :
high-speed optical techniques; iterative methods; optical Kerr effect; optical correlation; optical harmonic generation; optical modulation; optical saturable absorption; phase modulation; absorber dye solution; frequency chirp; light pulse intensity shape; light pulse phase change; light pulse spectra; light pulses; optical Kerr effect; optical Kerr effect recovery time; saturable effect; second-harmonic intensity autocorrelation; self-consistent iterative calculations; self-phase modulation; temporal shape; time-dependent phase change; ultrashort light pulses; Autocorrelation; Kerr effect; Nonlinear optics; Optical modulation; Optical pulse shaping; Optical pulses; Phase modulation; Pulse modulation; Pulse shaping methods; Shape;
Journal_Title :
Quantum Electronics, IEEE Journal of
