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Enigma of the second harmonic generation in oriented film of symmetric squaraine

  • Second harmonic generation (SHG) in the oriented film of symmetric squaraine (Sq) was studied. Oriented Sq film on aligned polytetrafluoroethylyne (PTFE) sublayer prepared by vacuum deposition with subsequent rubbing using a cloth has been obtained. However, the mechanisms of orientation and SHG are still not clear. Methyl and ethyl substituted hydroxyl-Sq (OHSq) compounds formed oriented films with dichroic ratio of 8 on PTFE layer but with dichroic ratio of 1,5 on Teflon AF. Second layer deposition of Me-OHSq on Et-OHSq or of Et-OHSq on Me-OHSq led to an increase of the film dichroic ratio. Only the film, where Me-OHSq was first layer, exhibits an increase of SHG signal after deposition of second layer. Small differences in bi-layered OHSq films structure was detected by X-Ray diffraction (XRD) spectra.

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Author:Kostyantyn GrytsenkoORCiD, Yu L. Slominskii, O. I. Tolmachev, R. Resel, S. Ksensov, Sigurd SchraderORCiD
URN:urn:nbn:de:kobv:526-opus4-15183
DOI (Version of Record):https://doi.org/10.1117/12.780711
Publisher:Society of Photo-Optical Instrumentation Engineers (SPIE)
Document Type:Conference Proceeding
Language:English
Year of Publication:2008
Publishing Institution:Technische Hochschule Wildau
Release Date:2021/09/16
Tag:deposition; dye; film; optical spectra; second harmonic generation; solid; squaraine
First Page:324
Last Page:331
Source:K. Grytsenko, Y. Slominski, O. Tolmachev, R. Resel, S. Ksensov, and S. Schrader "Enigma of the second harmonic generation in oriented film of symmetric squaraine", Proc. SPIE 6999, Organic Optoelectronics and Photonics III, 699920 (16 April 2008); https://doi.org/10.1117/12.780711
Copyright:Copyright 2008 Society of Photo-Optical Instrumentation Engineers (SPIE). One print or electronic copy may be made for personal use only. Systematic reproduction and distribution, duplication of any material in this paper for a fee or for commercial purposes, or modification of the content of the paper are prohibited.
Faculties an central facilities:Fachbereich Ingenieurwesen / Wirtschaftsingenieurwesen (bis 8/2014)
Dewey Decimal Classification:6 Technik, Medizin, angewandte Wissenschaften / 62 Ingenieurwissenschaften / 620 Ingenieurwissenschaften und zugeordnete Tätigkeiten
Licence (German):Das Dokument ist urheberrechtlich geschützt
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