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Proceedings Paper

Comments on the metrology properties of FROG method
Author(s): N. N. Bezuglov; J. Wang; Yurii A. Tolmachev
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Paper Abstract

Process of ultrashort pulse time structure reconstruction using FROG method and/or its variants is analyzed from two starting positions. The first one is in using of some general properties of pulses in a far zone of diffraction. This way permits for the increasing of stability of the inverse mathematical problem solution by reduction of the set of test functions. The possibility of reconstruction of the form of pulse emitted by laser itself from the results obtained in the far zone of diffraction is shown. The second position is in the analysis of space-and-time structure of the interference pattern formed in the nonlinear transparent matter used to produce the signal to be measured. To explain the formation of self-diffraction signal, the hypothesis of Cherenkov emission from this pattern is proposed. Special effects of spectrum transformation are discussed and some indirect confirmation of the idea is demonstrated.

Paper Details

Date Published: 9 June 2006
PDF: 9 pages
Proc. SPIE 6251, Lasers for Measurements and Information Transfer 2005, 62510D (9 June 2006); doi: 10.1117/12.677599
Show Author Affiliations
N. N. Bezuglov, Saint-Petersburg State Univ. (Russia)
J. Wang, Saint-Petersburg State Univ. (Russia)
Yurii A. Tolmachev, Saint-Petersburg State Univ. (Russia)

Published in SPIE Proceedings Vol. 6251:
Lasers for Measurements and Information Transfer 2005
Vadim E. Privalov, Editor(s)

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