Speckle-Interferometer Based Electro-Optic Displacement Sensor

C. P. Grover; A. K. Agarwal

doi:10.1117/12.949560

25 November 1985 Speckle-Interferometer Based Electro-Optic Displacement Sensor

C. P. Grover, A. K. Agarwal

Proceedings Volume 0556, Intl Conf on Speckle; (1985) https://doi.org/10.1117/12.949560
Event: 29th Annual Technical Symposium, 1985, San Diego, United States

Abstract

An analysis of the fringe visibility of a speckle interferometer has been given as a function of the source position. The interferometer consists of a double exposure speckle recording which, for an infinite aperture, produces in monochromatic light a set of unit visibility rectilinear fringes localized at infinity. In practice, the plane conjugate to that of the point source of light is taken to be the localization as well as the observation plane of the fringes. A longitudinal displacement of the light source gives rise to a reduction in the fringe visibility which has been monitored by positioning a line detector in the observation plane. The sensitivity of such a position sensing device depends upon the size and location in reference to the fringe profile and it has been estimated to be of the order of 0.1 micrometer. This study has been applied to the design and construction of a remote electro-optic displacement sensor. The range and the sensitivity of the device are mutually complementary and one could only be increased at the loss of the other or vice-versa. Furthermore, a study of the linearity of the sensor has been made as a function of the other sensor parameters.

Citation Download Citation

C. P. Grover and A. K. Agarwal "Speckle-Interferometer Based Electro-Optic Displacement Sensor", Proc. SPIE 0556, Intl Conf on Speckle, (25 November 1985); https://doi.org/10.1117/12.949560

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available

Members: $17.00

Non-members: $21.00 ADD TO CART

PROCEEDINGS
5 PAGES

DOWNLOAD PAPER SAVE TO MY LIBRARY

GET CITATION

RIGHTS & PERMISSIONS

Get copyright permission Get copyright permission on Copyright Marketplace

KEYWORDS

Sensors

Speckle

Visibility

Interferometers

Electro optical sensors

Electro optics

Fringe analysis

Show All Keywords

Keywords/Phrases

Search In:

Publication Years