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Please use this identifier to cite or link to this item: http://acervodigital.unesp.br/handle/11449/31880
Title: 
Relief grating induced by photo-expansion in Ga-Ge-S and Ga-Ge-As-S glasses
Author(s): 
Institution: 
  • Universidade de São Paulo (USP)
  • ASCR
  • ICT
  • Universidade Estadual Paulista (UNESP)
ISSN: 
1454-4164
Abstract: 
We report the fabrication of relief diffraction gratings recorded on a surface of photosensitive Ga10Ge25S65 and Ga5Ge25As5S65 glasses by means of interference of two UV laser beams at 351 nm. The diffraction efficiency (eta) of first diffraction order was measured. Atomic-force-microscope (AFM) was used to perform a 3D imaging analysis of the sample surface topography that shows the superposition of an imprinted grating over the topography of the glass. The change in the absorption edge and the refractive index has been evaluated and a structural approach of the relief grating on the glass surface has been discussed.
Issue Date: 
1-Jun-2002
Citation: 
Journal of Optoelectronics and Advanced Materials. Bucharest-magurele: Natl Inst Optoelectronics, v. 4, n. 2, p. 375-380, 2002.
Time Duration: 
375-380
Publisher: 
Natl Inst Optoelectronics
Keywords: 
  • light-induced effects
  • chalcogenide glasses
  • relief gratings
Source: 
http://joam.inoe.ro/arhiva/pdf4_2/Messaddeq.pdf
URI: 
Access Rights: 
Acesso aberto
Type: 
outro
Source:
http://repositorio.unesp.br/handle/11449/31880
Appears in Collections:Artigos, TCCs, Teses e Dissertações da Unesp

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