The lock-in CCD-two-dimensional synchronous detection of light

Author

Spirig, T. ; Seitz, P. ; Vietze, O. ; Heitger, F.

Author_Institution

Paul Scherrer Inst., Zurich, Switzerland

Volume

31

Issue

9

fYear

1995

fDate

9/1/1995 12:00:00 AM

Firstpage

1705

Lastpage

1708

Abstract

A new type of CCD image sensor for two-dimensional synchronous detection (“lock-in imager”) is presented. The measurement principle allows each pixel to measure the size of the amplitude modulation, the relative phase and the mean brightness level (background) of an oscillating optical wave field. Design, operation and measurement results are presented. A typical application for this sensor would be in 3-D imaging (range measurement) using heterodyne interferometry

Keywords

CCD image sensors; demodulation; light interferometry; optical images; optical modulation; synchronisation; 3-D imaging; CCD image sensor; amplitude modulation; design; heterodyne interferometry; lock-in imager; mean brightness level; measurement principle; operation; oscillating optical wave field; pixel; range measurement; relative phase; synchronous light detection; two-dimensional synchronous detection; Amplitude modulation; Brightness; Charge-coupled image sensors; Image sensors; Optical interferometry; Optical mixing; Optical modulation; Optical sensors; Phase measurement; Size measurement;

fLanguage

English

Journal_Title

Quantum Electronics, IEEE Journal of

Publisher

ieee

ISSN

0018-9197

Type

jour

DOI

10.1109/3.406386

Filename

406386