Electro-optic time lens model for femtosecond pulses

Francisco J. Marinho; Luís M. Bernardo

doi:10.1117/12.780609

25 April 2008 Electro-optic time lens model for femtosecond pulses

Proceedings Volume 6994, Photon Management III; 699403 (2008) https://doi.org/10.1117/12.780609
Event: SPIE Photonics Europe, 2008, Strasbourg, France

Abstract

We propose an electro-optic time-lens (EOTL) model based on the coupled-mode theory. The model describes the propagation of a femtosecond pulse in an electro-optical crystal with parabolic refractive index modulation by a microwave. The proposed model integrates the second order dispersion approximation (β₂ ≠ 0) and takes into consideration the possible mismatch between the microwave phase velocity and the pulse group velocity. The coupled-mode theory uses the Hermite-Gaussian functions which are the modes of an ideal electro-optic time-lens. The model characterizes completely the performances of EOTL, including the aberrations, and it establishes the maximum velocity mismatch for which the pulse profile propagates through the crystal without significant distortion. The theoretical model is numerically implement considering the propagation of a short pulse in a Litium Niobate time-lens.

Citation Download Citation

Francisco J. Marinho and Luís M. Bernardo "Electro-optic time lens model for femtosecond pulses", Proc. SPIE 6994, Photon Management III, 699403 (25 April 2008); https://doi.org/10.1117/12.780609

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