期刊
QUANTUM ELECTRONICS
卷 50, 期 3, 页码 305-308出版社
TURPION LTD
DOI: 10.1070/QEL17137
关键词
two-dimensional image edge enhancement; acousto-optical diffraction; Bragg diffraction; two-order diffraction
资金
- Russian Foundation for Basic Research [0030-2019-0014]
- [19-07-00071]
The process of two-dimensional image edge enhancement with an acousto-optical spatial filter using two orders of light diffraction is studied. It is theoretically shown that the diffraction that occurs in a paratellurite crystal on a 'slow' acoustic wave propagating orthogonally to the optical axis of the crystal allows enhancing a two-dimensional edge of an image, transferred by optical radiation with a wavelength of 0.63 mm in a wide band of acoustic frequencies 25 - 50 MHz. Enhancement of a two-dimensional image edge at an acoustic frequency of 29 MHz is experimentally demonstrated.
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