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Proceedings Paper

Geometric limits to phase matching in self-diffraction experiments
Author(s): Jose Viana Gomes; Antonio Guedes Pereira; Michael Scott Belsley
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Paper Abstract

In this communication we present a study regarding the limitations that geometry imposes on the degree of phase matching attainable in a self-diffraction experiment. We find that to generate a strong signal the effective area over which the incident beam are superposed within the nonlinear medium must contain spatial variations on a length scale equal to the inverse of the phase mismatch. We develop a simple model that allows us to interpret the generated signal in terms of a sum over contributing phasors from each plane of constant phase within the active region. The phasors tend to add together to create a spiral figure reminiscent of Cornu Spirals in diffraction theory.

Paper Details

Date Published: 24 July 2002
PDF: 6 pages
Proc. SPIE 4751, ICONO 2001: Nonlinear Optical Phenomena and Nonlinear Dynamics of Optical Systems, (24 July 2002); doi: 10.1117/12.475905
Show Author Affiliations
Jose Viana Gomes, Univ. do Minho (Portugal)
Antonio Guedes Pereira, Univ. do Minho (Portugal)
Michael Scott Belsley, Univ. do Minho (Portugal)


Published in SPIE Proceedings Vol. 4751:
ICONO 2001: Nonlinear Optical Phenomena and Nonlinear Dynamics of Optical Systems

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