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Use of nonlinear properties of intracavity type II second harmonic generation for image processing

AuthorsJacobo, Adrián ; Colet, Pere ; Scotto, Pierre; San Miguel, Maxi
Keywords[PACS] Imaging and optical processing
[PACS] Frequency conversion; harmonic generation, including higher-order harmonic generation
[PACS] Optical bistability, multistability, and switching, including local field effects
Issue Date25-Oct-2005
CitationApplied Physics B: Lasers and optics 81: 955-962 (2005)
AbstractWe discuss the use of intracavity type-II second harmonic generation for all-optical processing of images. Injecting an image in a pump beam linearly polarized and a homogeneous field in the orthogonally polarized pump it is possible to magnify the contrast and to recognize the contour of any part of the image whose intensity is above a tunable reference level. This can be done using ideal planar cavities where all the fields are resonant as well as in the more realistic situation where only the fundamental fields are resonant and using cavities with spherical mirrors.
Description8 pages, 10 figures.-- PACS nrs.: 42.30.-d; 42.65.Ky; 42.65.Pc.
Publisher version (URL)http://dx.doi.org/10.1007/s00340-005-2029-5
Appears in Collections:(IFISC) Artículos
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