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Thermal fixing of holographic gratings in planar LiNbO3:Ti:Fe waveguides

被引：21
|
作者：
Hukriede, J [1 ]
Kip, D [1 ]
Kratzig, E [1 ]
机构：
[1] Univ Osnabruck, Fachbereich Phys, D-49069 Osnabruck, Germany
来源：
APPLIED PHYSICS B-LASERS AND OPTICS | 1998年 / 66卷 / 03期
关键词：
D O I：
10.1007/s003400050397
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
Refractive index gratings in planar LiNbO3:Ti:Fe waveguides are thermally fixed during hologram recording at elevated temperatures. Different guides are fabricated by titanium indiffusion using iron-doped and nominally pure y-cut LiNbO3 substrates and characterization is performed by dark-mode spectroscopy. The refractive index modulation of gratings written and simultaneously fixed at 180 degrees C is investigated as a function of propagation depth, titanium and iron concentration. The experimental results are compared with those obtained for unfixed holograms recorded at room temperature.
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页码：333 / 338
页数：6
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