Title :
Numerical Study of Few-Cycle Pulses by Nonlinear Compression in Two-Photon Semiconductor Amplifiers
Author :
Kaminski, Noam ; Hayat, Alex ; Ginzburg, Pavel ; Orenstein, Meir
Author_Institution :
Electr. Eng. Dept., Technion - Israel Inst. of Technol., Haifa
Abstract :
Optical pulse compression down to a few optical cycles by the ultrabroadband gain of nonlinear two-photon process in semiconductors is proposed. Recent experimental demonstration of semiconductor two-photon gain (TPG) has motivated this analysis of ultrashort pulse dynamics with realistic semiconductor parameters. Comprehensive material model, including TPG, carrier depletion, linear absorption, Kerr effect, plasma response of injected carriers, and the material dispersion were numerically simulated using the finite-difference time-domain method. Pulse compression down to a few optical cycles is theoretically predicted.
Keywords :
finite difference time-domain analysis; high-speed optical techniques; nonlinear optics; optical Kerr effect; optical pulse compression; semiconductor optical amplifiers; Kerr effect; carrier depletion; few-cycle pulses; finite-difference time-domain method; linear absorption; nonlinear compression; optical pulse compression; plasma response; two-photon gain; two-photon semiconductor amplifiers; ultrabroadband gain; ultrashort pulse dynamics; Amplifiers; dispersive media; nonlinear optics; numerical analysis; semiconductor device modeling;
Journal_Title :
Photonics Technology Letters, IEEE
DOI :
10.1109/LPT.2008.2009469
