Research of Electromagnetic Fields Arising at Interaction of Laser Radiation with Ferroelectric Materials
| Autor: | V V Kolesov, V. B. Studenov, V. A. Davydov, Yu. V. Korobkin, I. V. Romanov |
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| Rok vydání: | 1999 |
| Předmět: | |
| Zdroj: | Physica Scripta. 60:277-282 |
| ISSN: | 1402-4896 0031-8949 |
| DOI: | 10.1238/physica.regular.060a00277 |
| Popis: | In this paper we deal with electromagnetic radiation arising due to variation of the dipole moment of a ferroelectric pattern as a result of its temperature change. It is also shown here that, when the pattern is heated up with a powerful electromagnetic pulse, the total radiated energy is inversely related to the pulse duration τp (at the same heating power). The radiation spectrum has its maximum at the frequencies of the order of τp-1 and exponentially abates if the frequency exceeds τp-1. The results of experimental investigation of radio-frequency radiation from ferroelectric crystals when they are heated with pulse laser radiation of nanosecond duration are touched upon below. A numerical calculation of the magnetic component of the radio wavefield has been performed for a laser pulse of a particular shape. A comparison between the experimental results and the theory prediction is also available here. |
| Databáze: | OpenAIRE |
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