Photorefractive properties of cobalt-doped strontium barium niobate crystals
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...
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| Veröffentlicht in: | Quantum electronics (Woodbury, N.Y.) N.Y.), 1999-05, Vol.29 (5), p.449-453 |
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| container_end_page | 453 |
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| container_issue | 5 |
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| container_title | Quantum electronics (Woodbury, N.Y.) |
| container_volume | 29 |
| creator | Bogodaev, N V Ivleva, Lyudmila I Lykov, P A Polozkov, N M Osiko, Vyacheslav V |
| description | 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) |
| doi_str_mv | 10.1070/QE1999v029n05ABEH001506 |
| format | Article |
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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. 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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. 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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)</abstract><cop>United States</cop><pub>IOP Publishing</pub><doi>10.1070/QE1999v029n05ABEH001506</doi><tpages>5</tpages></addata></record> |
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| ispartof | Quantum electronics (Woodbury, N.Y.), 1999-05, Vol.29 (5), p.449-453 |
| issn | 1063-7818 1468-4799 |
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| source | IOP Publishing Journals; Institute of Physics (IOP) Journals - HEAL-Link |
| subjects | ALKALINE EARTH METALS BARIUM BEAMS CARRIERS CHARGED PARTICLES COBALT COBALT IONS CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY COUPLING CRYSTALS DIFFUSION LENGTH DIMENSIONS DOPED MATERIALS EFFICIENCY ELEMENTS GRATINGS INFORMATION IONS LENGTH MATERIALS METALS NIOBATES NIOBIUM COMPOUNDS NONLINEAR PROBLEMS OXYGEN COMPOUNDS REFRACTORY METAL COMPOUNDS SCREENING SENSITIVITY STORAGE STRONTIUM TRANSITION ELEMENT COMPOUNDS TRANSITION ELEMENTS TRAPPING |
| title | Photorefractive properties of cobalt-doped strontium barium niobate crystals |
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