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ID: 318092.0, MPI für Gravitationsphysik / Laser Interferometry & Gravitational Wave Astronomy
The Gouy phase shift in nonlinear interactions of waves
Authors:Lastzka, Nico; Schnabel, Roman
Date of Publication (YYYY-MM-DD):2007
Title of Journal:Optics Letters
Volume:15
Start Page:7211
End Page:7217
Review Status:not specified
Audience:Not Specified
Abstract / Description:We theoretically analyze the influence of the Gouy phase shift on the nonlinear interaction between waves of different frequencies. We focus on $\chi^{(2)}$ interaction of optical fields, e.g. through birefringent crystals, and show that focussing, stronger than suggested by the Boyd-Kleinman factor, can further improve nonlinear processes. An increased value of 3.32 for the optimal focussing parameter for a single pass process is found. The new value builds on the compensation of the Gouy phase shift by a spatially varying, instead constant, wave vector phase mismatch. We analyze the single-ended, singly resonant standing wave nonlinear cavity and show that in this case the Gouy phase shift leads to an additional phase during backreflection. Our numerical simulations may explain ill-understood experimental observations in such devices.
External Publication Status:published
Document Type:Article
Communicated by:Karsten Danzmann
Affiliations:MPI für Gravitationsphysik/Laser Interferometry & Gravitational Wave Astronomy
MPI für Gravitationsphysik/Teilinstitut Hannover
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