Photorefractive properties of cobalt-doped strontium barium niobate crystals
- Laser Materials and Technology Research Center, A. M. Prokhorov General Physics Institute, Russian Academy of Sciences, Moscow (Russian Federation)
The two-wave interaction (at {lambda} = 488 nm) in strontium barium niobate crystals doped with cobalt ions (Co:SBN) was studied. The experimental dependences of the gain coefficient on the grating period and of the grating response time on the writing beam intensity were used to calculate the Debye screening length, the diffusion length, the dark conductivity, and the effective concentration of carrier traps for a series of Co:SBN crystals with different dopant concentrations. The crystals were shown to have high coupling coefficients ({Gamma} = 33 cm{sup -1}) and short optical response times ({tau} = 140 ms for I = 1 W cm{sup -2} ). This, in combination with a high photorefractive sensitivity (S = 39 cm{sup 2} J{sup -1} ), determines the efficiency of their use in the storage of optical information and in laser phase conjugation. (nonlinear optical phenomena)
- OSTI ID:
- 21439479
- Journal Information:
- Quantum Electronics (Woodbury, N.Y.), Vol. 29, Issue 5; Other Information: DOI: 10.1070/QE1999v029n05ABEH001506; ISSN 1063-7818
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
SUPERCONDUCTIVITY AND SUPERFLUIDITY
BARIUM
BEAMS
CARRIERS
COBALT
COBALT IONS
COUPLING
CRYSTALS
DIFFUSION LENGTH
DOPED MATERIALS
EFFICIENCY
GRATINGS
INFORMATION
NIOBATES
NONLINEAR PROBLEMS
SCREENING
SENSITIVITY
STORAGE
STRONTIUM
TRAPPING
ALKALINE EARTH METALS
CHARGED PARTICLES
DIMENSIONS
ELEMENTS
IONS
LENGTH
MATERIALS
METALS
NIOBIUM COMPOUNDS
OXYGEN COMPOUNDS
REFRACTORY METAL COMPOUNDS
TRANSITION ELEMENT COMPOUNDS
TRANSITION ELEMENTS