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Optical Engineering

Ultrafast temporal pattern generation and recognition
Author(s): Hua Zou; Enwen Dai; Changhe Zhou; Yanyan Zhang
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Paper Abstract

Ultrafast temporal pattern generation and recognition with femtosecond laser technology is presented, analyzed, and experimentally implemented. Ultrafast temporal pattern generation and recognition are realized by taking advantage of two well-known techniques: the space-time conversion technique and the ultrafast pulse measurement technique. Here the temporal pattern for the designed multiple pulses, optimized with a preassumed Gaussian spectral distribution of an ultrashort pulse, is described. With the simulation of a Gaussian spectral distribution, we realize that the uniformity of the generated multiple ultrafast temporal pulses is relevant to the repeated number of modulation periods in the mask in the spectral plane. Moreover, the change of Gaussian spectral phases with the wavelengths in the modulated phase plate is considered. Experiments of ultrafast temporal pattern recognition by the frequency-resolved optical gating (FROG) characterization technique are also given.

Paper Details

Date Published: 1 August 2004
PDF: 8 pages
Opt. Eng. 43(8) doi: 10.1117/1.1767192
Published in: Optical Engineering Volume 43, Issue 8
Show Author Affiliations
Hua Zou, Shanghai Institute of Optics and Fine Mechanics (China)
Enwen Dai, Shanghai Institute of Optics and Fine Mechanics (China)
Changhe Zhou, Shanghai Institute of Optics and Fine Mechanics (China)
Yanyan Zhang, Shanghai Institute of Optics and Fine Mechanics (China)


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