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Proceedings Paper

Remote Sensors Using Hybrid Phase-Conjugator/Modulators
Author(s): David M. Pepper
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Paper Abstract

We describe the use of a single crystal of BaTiO3 as a phase-conjugator/modulator. This class of retromodulator is alignment-free, simple, and passive. By applying a time-varying electric field across a self-pumped phase conjugate mirror, simultaneous wave-front reversal and temporal modulation encoding occur within the same volume. With modest signal fields (-4120 V/cm) we observe 100% depth-of-phase modulation, with a measured bandwidth in excess of 1 MHz (scalable to >10 GHz), and with excellent conjugation fidelity. Furthermore, we observe a conjugate reflectivity of -73% using this simple geometry. Applications of such devices to remote free-space and fiber sensors and to phase-conjugator resonator configurations are discussed.

Paper Details

Date Published: 22 April 1988
PDF: 11 pages
Proc. SPIE 0739, Phase Conjugation, Beam Combining, and Diagnostics, (22 April 1988); doi: 10.1117/12.939704
Show Author Affiliations
David M. Pepper, Hughes Research Laboratories (United States)


Published in SPIE Proceedings Vol. 0739:
Phase Conjugation, Beam Combining, and Diagnostics
Ira Abramowitz; Robert A. Fisher, Editor(s)

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