Semiconductor CdF2:Ga and CdF2:In Crystals as Media for Real-Time Holography
| Autor: | A. I. Ryskin, A. E. Angervaks, A. S. Shcheulin |
|---|---|
| Rok vydání: | 2012 |
| Předmět: |
real-time holography
holographic correlator Materials science business.industry dynamic correction of wavefronts and optical images Doping Holography Review Dielectric law.invention Monocrystalline silicon Photochromism chemistry.chemical_compound cadmium fluoride holographic grating decay Semiconductor chemistry law Metastability Optoelectronics bistable centers General Materials Science Cadmium fluoride business photoinduced metastable state |
| Zdroj: | Materials |
| ISSN: | 1996-1944 |
| DOI: | 10.3390/ma5050784 |
| Popis: | Monocrystalline cadmium fluoride is a dielectric solid that can be converted into a semiconductor by doping with donor impurities and subsequent heating in the reduction atmosphere. For two donor elements, Ga and In, the donor ("shallow") state is a metastable one separated from the ground ("deep") state by a barrier. Photoinduced deep-to-shallow state transition underlies the photochromism of CdF₂:Ga and CdF₂:In. Real-time phase holograms are recorded in these crystals capable of following up optical processes in a wide frequency range. The features of photochromic transformations in CdF₂:Ga and CdF₂:In crystals as well as holographic characteristics of these media are discussed. Exemplary applications of CdF₂-based holographic elements are given. |
| Databáze: | OpenAIRE |
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