Evanescent - Wave Recording in Very Thin Layers

The theoretical background of optical holographic recording in very thin films is given. The interference fringes are stored by surface - propagating evanescent waves. Such waves are created by the total internal light reflection (TIR). The experimental verification of the theory is made. The hologr...

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Bibliographic Details
Main Authors: Sainov, S, Dikova, J, Stoycheva-Topalova, R
Format: Report
Language:English
Subjects:
ARSENIC COMPOUNDS
ARSENIC TRISULFIDE FILMS
BULGARIA
CHALCOGENIDE GLASS
CHALCOGENS
COMPONENT REPORTS
DIFFRACTION
Electrooptical and Optoelectronic Devices
EVANESCENT WAVES
FOREIGN REPORTS
GLASS
GRATINGS(SPECTRA)
HOLOGRAPHY
INTERNAL REFLECTION
OPTICAL HOLOGRAPHIC
OPTICAL STORAGE
Optics
POLARIZATION
REFRACTIVE INDEX
SYMPOSIA
THIN FILMS
TIR(TOTAL INTERNAL REFLECTION)
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Summary:The theoretical background of optical holographic recording in very thin films is given. The interference fringes are stored by surface - propagating evanescent waves. Such waves are created by the total internal light reflection (TIR). The experimental verification of the theory is made. The holographic grating with 454nm period has been recorded in 29, 39 and 74 nm thick As2S3 films. The diffraction efficiency dependence on the time is investigated. The polarization behavior of TIR surface holograms is similar to that of the thick Bragg gratings. The possible applications of this holographic recording are also discussed. Published in Jnl. of Optoelectronics and Advanced Materials, v3 n2, Jun 2001. p395-398 This article is from ADA398590 International Workshop on Amorphous and Nanostructured Chalcogenides 1st, Fundamentals and Applications held in Bucharest, Romania, 25-28 Jun 2001. Part 1