Open AccessSuppression of nonlinear optical signals in finite interaction volumes of bulk materials
Author(s) -
Stefano Cattaneo,
Mikael Siltanen,
Fu Xiang Wang,
Martti Kauranen
Publication year - 2005
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/opex.13.009714
Subject(s) - optics , nonlinear system , interference (communication) , coherence (philosophical gambling strategy) , phase (matter) , physics , volume (thermodynamics) , finite volume method , boundary value problem , nonlinear optics , boundary (topology) , materials science , mechanics , laser , mathematical analysis , channel (broadcasting) , mathematics , quantum mechanics , electrical engineering , engineering
We show that nonlinear optical signals generated by non-phase-matched interactions are strongly suppressed when the interaction volume is finite and localized deep inside the bulk of a homogeneous material, as opposed to the case where the interaction volume extends across a boundary of the material. The suppression in the bulk originates from destructive interference between the signals generated in the two regions where the interaction is gradually turned on and off and depends on the ratio of the coherence length to the characteristic length of the interaction volume.