PHOTOREFRACTIVE EFFECT IN PROTON-IMPLANTED FE-DOPED KNBO3 WAVE-GUIDESAT TELECOMMUNICATION WAVELENGTHS

Authors
BRULISAUER S FLUCK D GUNTER P BECKERS L BUCHAL C
Citation
S. Brulisauer et al., PHOTOREFRACTIVE EFFECT IN PROTON-IMPLANTED FE-DOPED KNBO3 WAVE-GUIDESAT TELECOMMUNICATION WAVELENGTHS, Journal of the Optical Society of America. B, Optical physics, 13(11), 1996, pp. 2544-2548
Citations number
13
Categorie Soggetti
Optics
Journal title
Journal of the Optical Society of America. B, Optical physics → ACNP
ISSN journal
07403224
Volume
13
Issue
11
Year of publication
1996
Pages
2544 - 2548
Database
ISI
SICI code
0740-3224(1996)13:11<2544:PEIPFK>2.0.ZU;2-N
Abstract
We report on photorefractive two-beam coupling in proton-implanted Fe- doped KNbO3 waveguides at wavelengths from 632.8 to 1550 nm. Exponenti al gain coefficients of 11 and 0.9 cm(-1) were measured at wavelengths of 632.8 nm and 1550 nm, respectively. Photorefractive response times as low as 120 mu s are reported at 632.8 nm for a pump power of 4 mW. It is shown that proton irradiation increases the effective trap dens ity, decreases the response time, and extends the photorefractive sens itivity of Fe-doped KNbO3 crystals toward near-infrared wavelengths. ( C) 1996 Optical Society of America.