| Conţinutul numărului revistei |
| Articolul precedent |
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 SM ISO690:2012FESHCHENKO, Valerii, ZYABLYUK, Konstantin, SHEPELEV, Valerii, SENOKOSOV, Edward. Diffraction of optical radiation on acoustic waves in the diamond. In: Applied Physics, 2018, nr. 5, pp. 5-10. ISSN 1996-0948. |
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 Applied Physics |
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| Numărul 5 / 2018 / ISSN 1996-0948 | ||||||
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| Pag. 5-10 | ||||||
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In this paper, the interaction of laser radiation with a wavelength of 650 nm with a bulk acoustic wave in a composite acoustic resonator on a diamond at a frequency of 6 GHz was theoretically investigated. The mathematical model of this interaction is constructed and the Bragg diffraction of the optical wave in the diamond is studied on its basis. It was shown that the Bragg angle in the diamond at diffraction on an acoustic wave with a frequency of 6 GHz is 6 degrees. The maximum diffraction efficiency, when the length of interaction of optical radiation with sound is 2 mm, and the width of the beam is 1 mm, is achieved when the acoustic power of 125 watts. The modulation band of the acoustic wave, in these conditions, is 191.85 MHz. By reducing the optical wavelength to 226 nm, it was possible to expand the acoustic wave modulation band to 520.64 MHz. Based on the obtained data, it was concluded that the bandwidth in the composite acoustic resonator on the diamond is formed by acousto-optic interaction, not acousto-electric one. |
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| Cuvinte-cheie Acousto-optical devices, Acousto-optical materials, Diamond, Diffraction modulators, HBAR |
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