Photoacoustic transformation of Bessel light beams in magnetoactive superlattices
| Autor: | G. S. Mityurich, V. V. Sviridova, E. V. Chernenok, A. N. Serdyukov |
|---|---|
| Rok vydání: | 2015 |
| Předmět: |
Materials science
business.industry chemistry.chemical_element General Chemistry Condensed Matter Physics Polarization (waves) Piezoelectricity Bismuth germanate Transverse mode Bismuth Condensed Matter::Materials Science chemistry.chemical_compound Optics Transducer chemistry Light beam General Materials Science business Frequency modulation |
| Zdroj: | Crystallography Reports. 60:273-279 |
| ISSN: | 1562-689X 1063-7745 |
| DOI: | 10.1134/s1063774515020194 |
| Popis: | Photoacoustic transformation of the TE mode of a Bessel light beam (BLB) has been studied for piezoelectric detection in short-period superlattices formed by magnetoactive crystals of bismuth germanate (Bi12GeO20) and bismuth silicate (Bi12SiO20) types. It is shown that the resulting signal amplitude can be controlled using optical schemes of BLB formation with a tunable cone angle. A resonant increase in the signal amplitude has been found in the megahertz range of modulation frequencies and its dependences on the BLB modulation frequency, geometric sizes of the two-layer structure and piezoelectric transducer, radial coordinate of the polarization BLB mode, and dissipative superlattice parameters are analyzed. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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