Optical tracking and motion detection using photorefractive Bi12SiO20
Optical tracking and motion detection using photorefractive Bi12SiO20
We demonstrate a technique for the differentiation of time varying optical images that exploits the spatial frequency dependent response time of grating formation in photorefractive BSO. The detection characteristics for such a differential signal can be varied via a tunable response time for each arm of a Michelson interferometer arrangement. Experimental results are presented for various rates of change of the input signal by chopping at different speeds, displacing an input transparency, and directional motion of the object. To illustrate this last operation, results are also presented for the Fourier plane of an output image.
138-144
Khoury, J.A.
8b0a4a11-6419-44cf-9aab-f0a8445974a0
Hussain, G.
60f5b057-92d8-4506-a5f2-19eb167e4d8e
Eason, R.W.
e38684c3-d18c-41b9-a4aa-def67283b020
15 May 1989
Khoury, J.A.
8b0a4a11-6419-44cf-9aab-f0a8445974a0
Hussain, G.
60f5b057-92d8-4506-a5f2-19eb167e4d8e
Eason, R.W.
e38684c3-d18c-41b9-a4aa-def67283b020
Khoury, J.A., Hussain, G. and Eason, R.W.
(1989)
Optical tracking and motion detection using photorefractive Bi12SiO20.
Optics Communications, 71 (3-4), .
(doi:10.1016/0030-4018(89)90415-X).
Abstract
We demonstrate a technique for the differentiation of time varying optical images that exploits the spatial frequency dependent response time of grating formation in photorefractive BSO. The detection characteristics for such a differential signal can be varied via a tunable response time for each arm of a Michelson interferometer arrangement. Experimental results are presented for various rates of change of the input signal by chopping at different speeds, displacing an input transparency, and directional motion of the object. To illustrate this last operation, results are also presented for the Fourier plane of an output image.
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Published date: 15 May 1989
Identifiers
Local EPrints ID: 435273
URI: http://eprints.soton.ac.uk/id/eprint/435273
ISSN: 0030-4018
PURE UUID: 21e98548-605f-4739-9560-c5f249ce7e02
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Date deposited: 29 Oct 2019 17:30
Last modified: 17 Mar 2024 02:35
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Author:
J.A. Khoury
Author:
G. Hussain
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