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Lensless acousto-optical convolver

Lensless acousto-optical convolver

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© The Institution of Electrical Engineers
Published

A lensless acousto-optical convolver has been realised with surface acoustic waves, which relies on a technique of polarisation discrimination detection of the diffracted light. A polariser may, then, filter the light signal directly in the Fresnel field, thus allowing realisation of a strictly compact device that retains properties of easy adjustment and simplicity.

Inspec keywords: surface acoustic wave devices; acousto-optical devices; signal processing

Other keywords: polarisation discrimination detection; diffracted light; Fresnel field light signal filtering; lensless acoustooptical convolver; SAW light diffraction

Subjects: Acoustic signal processing; Acoustic wave devices; Acousto-optical devices; Acoustical measurements and instrumentation; Signal processing and detection; Optical elements, devices and systems

References

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      • A. Alippi , A. Palma , L. Palmieri , G. Socino , E. Verona . Polarization interferometry in acousto-optics. Appl. Phys. Lett. , 127 - 129
    2. 2)
      • Alippi, A., Palma, A., Palmieri, L., Socino, G.: `Light diffraction by surface acoustic waves for optical convolutors', Ultrasonics international conference proceedings, 1975, p. 152–155.
    3. 3)
      • G.I. Stegeman . Optical probing of surface waves and surface wave devices. IEEE Trans. , 33 - 63
    4. 4)
      • W.T. Maloney , H.R. Carleton . Light diffraction by transverse ultrasonic waves in hexagonal crystals. IEEE Trans. , 135 - 139
    5. 5)
      • C.J. Kramer , M.N. Araghi , P. Das . Real-time convolution using acousto-optic diffraction from surface waves. Appl. Phys. Lett. , 180 - 183
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      • R.W. Damon , W.T. Maloney , D.H. McMahon . (1970) Interaction of light with ultrasound: phenomena and applications, Physical acoustics.
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      • R. Normandin , G.I. Stegeman . Signal.processing with surface waves via the double acousto-optic interaction. J. Appl. Phys. , 2277 - 2285
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