Multimode illumination in the terahertz for elimination of target orientation requirements and minimization of coherent effects in active imaging systems

Douglas T. Petkie; Jennifer A. Holt; Mark A. Patrick; Frank C. De Lucia

doi:10.1117/1.OE.51.9.091604

16 May 2012 Multimode illumination in the terahertz for elimination of target orientation requirements and minimization of coherent effects in active imaging systems

Douglas T. Petkie, Jennifer A. Holt, Mark A. Patrick, Frank C. De Lucia

Author Affiliations +

Optical Engineering, Vol. 51, Issue 9, 091604 (May 2012). https://doi.org/10.1117/1.OE.51.9.091604

Abstract

It is shown that with appropriate multimode illumination and modulation strategies, it is possible to achieve the high sensitivity of active illumination, with the elimination of the need for "strategic" angular orientation of the target and to do so while minimizing the impact of coherent effects such as speckle. It is also shown that very modest terahertz (THz) power levels correspond to very high brightness temperatures, even when this power is divided among the many modes of large enclosures. We also consider how technical advances in the THz will continue to expand the scenarios of applicability for these approaches.

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Douglas T. Petkie, Jennifer A. Holt, Mark A. Patrick, and Frank C. De Lucia "Multimode illumination in the terahertz for elimination of target orientation requirements and minimization of coherent effects in active imaging systems," Optical Engineering 51(9), 091604 (16 May 2012). https://doi.org/10.1117/1.OE.51.9.091604

Published: 16 May 2012

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