|Title:||A new method of electrical fixing in strontium-barium niobate crystals||Authors:||Wesner, M.
|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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