Determination of H concentration in LiNbO3 by photorefractive fixing
- 29 June 1992
- journal article
- research article
- Published by AIP Publishing in Applied Physics Letters
- Vol. 60 (26) , 3212-3214
- https://doi.org/10.1063/1.106742
Abstract
A new method to determine the proton concentration in LiNbO3 is presented. The method is based on the measurement of the diffraction efficiency of a photorefractive grating in two situations. It is first measured after recording at room temperature, and second after saturation of the fixing process at a given temperature (about 150 °C). From only these two experimental data, the value obtained for the proton concentration in our sample is H0=(4.4±0.7)×1018 cm−3. This value agrees, within the experimental error, with that obtained from the infrared absorption arising from the OH− stretching bond.Keywords
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