Electronic Heterodyne Recording Of Interference Patterns

F. L. Merat; P. C. Claspy

doi:10.1117/12.957851

25 December 1979 Electronic Heterodyne Recording Of Interference Patterns

F. L. Merat, P. C. Claspy

Proceedings Volume 0192, Interferometry; (1979) https://doi.org/10.1117/12.957851
Event: 23rd Annual Technical Symposium, 1979, San Diego, United States

Abstract

An electronic heterodyne technique is being investigated for video (i.e., television rate and format) recording of interference patterns. In the heterodyne technique electro-optic modulation is used to introduce a sinusoidal phase shift between the beams of an interferometer. For phase modulation frequencies between 0.1 and 15 MHz an image dissector camera may be used to scan the resulting temporally modulated interference pattern. Heterodyne detection of the camera output is used to selectively record the interference pattern. An advantage of such synchronous recording is that it permits recording of low-contrast fringes in high ambient light conditions. In addition, the use of a vector scanned image dissector camera permits one to scan only certain selected points for rapid acquisition of selected interferometric data. Results will be presented for the recording of simple interference patterns. The application of this technique to the recording of holograms will be discussed.

Citation Download Citation

F. L. Merat and P. C. Claspy "Electronic Heterodyne Recording Of Interference Patterns", Proc. SPIE 0192, Interferometry, (25 December 1979); https://doi.org/10.1117/12.957851

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