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- Publisher
- Springer Journals
- Copyright
- 2019 Pleiades Publishing, Ltd.
- ISSN
- 1063-7710
- eISSN
- 1562-6865
- DOI
- 10.1134/s1063771019050038
- Publisher site
- See Article on Publisher Site
Abstract
Abstract A method is proposed for removing heat from the transducer of an acousto-optic deflector without substantial acoustic damping. The rear surface of the transducer and the heat–radiator surface are kept in contact through a thin sound-insulating fluid layer. The method is based on the considerable difference in the complex acoustic impedances for shear vibrations of fluids and a solid (the piezotransducer) by means of efficient heat transfer through the fluid. In the experiment, a continuous operation mode of the acousto-optic deflector is achieved with an acoustic wave intensity of more than 20 W/cm2. The acousto-optic deflector has been created that operates in the Bragg diffraction mode with a phase–modulation index of 3π with an input continuous controlling electric power of 3 W. The deflector characteristics for a light wavelength of 1.06 μm are as follows: diffraction efficiency no less than 90% in the 25 MHz frequency band at an absolute scanning angle of 40 mrad.
Journal
Acoustical Physics – Springer Journals
Published: Sep 1, 2019
Keywords: Acoustics