Spectral behavior of diffracted chirped Gaussian pulses in the far field

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Abstract:

Based on the Fourier transform method, the analytical expression for the power spectrum of diffracted chirped Gaussian pulses in the far field is derived. Detailed numerical calculations are performed to illustrate the far-field spectral behavior and temporal intensity distributions of diffracted chirped Gaussian pulses. It is shown that the spectrum may be redshifted, blueshifted, and split into two or more than two parts, and the shifting of maximum and splitting of temporal intensity profiles occur. The far-field spectral behavior and temporal intensity distributions of ultrashort chirped Gaussian pulses diffracted at an aperture depend on the truncation parameter δ, pulse duration T, chirp parameter C and diffraction angle α. Specifically, for ultrashort chirped pulses there exists also the spectral switch.

Document Type: Research Article

DOI: http://dx.doi.org/10.1078/0030-4026-00335

Affiliations: 1: Department of Physics, Luoyang Normal College, Luoyang 471022, China 2: Institute of Laser Physics & Chemistry, Sichuan University, Chengdu 610064, China

Publication date: May 1, 2004

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