Methods for controlling of the laser-induced absorption in a BTO crystal by using of cw-laser radiation
| Autor: | Richard Kowarschik, A. Matusevich, Stanislav M. Shandarov, A. Tolstik, M. G. Kisteneva, Armin Kiessling, Vladislav Matusevich |
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| Rok vydání: | 2009 |
| Předmět: |
Quantum optics
Materials science Physics and Astronomy (miscellaneous) Absorption spectroscopy business.industry General Engineering Physics::Optics General Physics and Astronomy Electron Photorefractive effect Radiation Laser law.invention Wavelength Optics law Optoelectronics Redistribution (chemistry) business |
| Zdroj: | Applied Physics B. 96:119-125 |
| ISSN: | 1432-0649 0946-2171 |
| DOI: | 10.1007/s00340-009-3512-1 |
| Popis: | A photorefractive BTO crystal is exposed with cw-laser beams (430 mW/cm2 at 514 nm), and the photo-induced absorption between 480 and 900 nm is studied. A method of controlling this absorption by low intensity laser radiation of “green” and “red” wavelengths is demonstrated. The physical mechanism can be explained by the redistribution of electrons on the long-lived energy levels into the forbidden band. Dynamical characteristics of the redistribution are estimated. |
| Databáze: | OpenAIRE |
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