Wideband Signal Recording And Playback With High Time-Bandwidth Product

R. A. Coppock; R. F. Croce; R. J. Ellis; R. N. Markell

doi:10.1117/12.935018

20 September 1982 Wideband Signal Recording And Playback With High Time-Bandwidth Product

R. A. Coppock, R. F. Croce, R. J. Ellis, R. N. Markell

Proceedings Volume 0390, High Speed Read/Write Techniques for Advanced Printing and Data Handling; (1982) https://doi.org/10.1117/12.935018
Event: 1983 Los Angeles Technical Symposium, 1983, Los Angeles, United States

Abstract

An analog recording technique is described where an acousto-optic Bragg cell is driven by an amplitude-modulated carrier and strobed with a pulsed laser. The acoustic column of the Bragg cell is imaged onto film using the zero order diffracted light to maximize system efficiency. Performance characteristics of system components are examined relative to their impact on system bandwidth, dynamic range, and frequency resolution. A breadboard recorder was used to demonstrate the technique and results from system tests are presented. The breadboard recorder achieved a bandwidth extending from 10 to 190 MHz with a dynamic range peak to RMS exceeding 22 dB. A two-dimensional, optical processing technique is described where time-bandwidth products exceeding 106 can be achieved.

Citation Download Citation

R. A. Coppock, R. F. Croce, R. J. Ellis, and R. N. Markell "Wideband Signal Recording And Playback With High Time-Bandwidth Product", Proc. SPIE 0390, High Speed Read/Write Techniques for Advanced Printing and Data Handling, (20 September 1982); https://doi.org/10.1117/12.935018

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