Title: A new method of electrical fixing in strontium-barium niobate crystals
Authors: Wesner, M.
Herden, C.
Kip, Detlef  
Language: en
Subject (DDC): DDC::500 Naturwissenschaften und Mathematik
Issue Date: 2001
Publisher: Optical Society of America
Document Type: Conference Object
Journal / Series / Working Paper (HSU): OSA trends in optics and photonics : TOPS 
Publisher Place: Washington, DC
Conference: Photorefractive Effects, Materials, and Devices 2001 
Abstract: 
We suggest a new method of electrical fixing in strontium-barium niobate (SEN) crystals. The method takes advantage of the large difference of the extraordinary refractive index in poled compared to unpoled SEN samples. A SEN crystal that is locally depolarized can guide extraordinarily polarized light inside the depoled crystal areas. A local depoling of the crystal is achieved with the help of light-induced screening of an externally applied electric field. By applying a suitable external electric field, the polarization can be reversed outside the illuminated area, while the reversal inside is prevented. At the boarders between illuminated and non-illuminated regions depolarized areas can form, resulting in waveguiding channels for extraordinarily polarized light.

© 2001 Optical Society of America
Organization Units (connected with the publication): Universität Osnabrück
ISBN: 1-55752-693-1
DOI: 10.1364/PEMD.2001.152
Appears in Collections:Publications of the HSU Researchers (before HSU)

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