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Pyroelectrically induced photorefractive effect in Sr(0.61) Ba(0.39)Nb(2)O(6):Ce
Optics Letters
|October 16, 2009
Summary
This study explores photorefractive properties in cerium-doped strontium barium niobate crystals. Pyroelectric fields were found to significantly enhance light-induced refractive index changes.
Area of Science:
- Materials Science
- Solid State Physics
- Optoelectronics
Background:
- Strontium barium niobate (Sr$_{0.61}$Ba$_{0.39}$)Nb$_2$O$_6$ is a ferroelectric crystal with potential photorefractive applications.
- Cerium doping is known to influence photorefractive behavior in niobate crystals.
Purpose of the Study:
- Investigate the photorefractive properties of cerium-doped strontium barium niobate single crystals.
- Determine the role of pyroelectric fields in light-induced refractive index changes.
Main Methods:
- Utilized Q-switched light pulses at a wavelength of 532 nm.
- Characterized the photorefractive response of the doped crystal.
Main Results:
- Observed significant light-induced refractive index changes.
- Identified pyroelectric fields as the dominant charge driving force.
Conclusions:
- Pyroelectric fields play a crucial role in enhancing photorefractive effects in this material.
- Cerium-doped strontium barium niobate exhibits promising photorefractive characteristics.
