Permanent narrow-band reflection holograms for infrared light recorded in LiNbO3:Ti:Cu channel waveguides |
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Authors: | J Hukriede D Kip E Krätzig |
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Institution: | Universit?t Osnabrück, Fachbereich Physik, 49069 Osnabrück, Germany (Fax: +49-541/969-3510, E-mail: joerg.hukriede@uos.de), DE
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Abstract: | Permanent refractive-index gratings are generated by thermal fixing of holograms in photorefractive lithium niobate channel
waveguides. The guides are fabricated by successive indiffusion of titanium stripes and thin layers of copper. After high-temperature
recording with green light, refractive-index modulations exceeding Δn=8×10-5 for light of the telecommunication wavelength 1550 nm appear without the need of any development process of the written holograms.
The gratings are stable in the dark and no compensation mechanism via dark conductivity is observed. Thus this method may
be well suited for long-time applications in holography and integrated optics.
Received: 2 October 2000 / Revised version: 25 January 2001 / Published online: 22 March 2001 |
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Keywords: | PACS: 42 40 E 42 82 E 84 40 U |
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