Spatial heterodyning of the output signal from an acousto-optic correlator
作者:
C.Daniel,
期刊:
IEE Proceedings J (Optoelectronics)
(IET Available online 1985)
卷期:
Volume 132,
issue 2
页码: 101-104
年代: 1985
DOI:10.1049/ip-j.1985.0020
出版商: IEE
数据来源: IET
摘要:
In many practical applications of time-integrating acousto-optic correlators, constraints are placed both on the signal and on the devices used in the correlator. These constraints limit control of the spatial carrier frequency on which the output cross-correlation is formed. We examine the theory and present practical results of spatial heterodyning using a diffraction grating applied to a ‘joint collinear’ interferometric correlator which overcomes this limitation.
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