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Selective image extraction by synthesis of the coherence function using two-dimensional optical lock-in amplifier with microchannel spatial light modulator

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3 Author(s)
Zuyuan He ; Res. Center for Adv. Sci. & Technol., Tokyo Univ., Japan ; Mukohzaka, N. ; Hotate, K.

A novel optical information processing system by synthesis of the coherence function is built up to extract a two dimensional image from a three-dimensional object at a tenable depth with neither mechanical scanning nor digital calculation. In this system, a two-dimensional optical lock-in amplifier with the microchannel spatial light modulator is developed to detect selectively the coherence component, so that the limitation to the depth resolution introduced by the holographic detection which was used in our previous systems is overcome. Selective image extraction Is demonstrated successfully.

Published in:

Photonics Technology Letters, IEEE  (Volume:9 ,  Issue: 4 )

Date of Publication:

April 1997

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