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World's Most Complex 2-D Laser Beamsteering Array Demonstrated, Nature Study


1/18/2013 7:40:45 AM

A new 2-D optical phased array technology will enable advanced LADAR and other defense applications. Most people are familiar with the concept of RADAR. Radio frequency (RF) waves travel through the atmosphere, reflect off of a target, and return to the RADAR system to be processed. The amount of time it takes to return correlates to the object's distance. In recent decades, this technology has been revolutionized by electronically scanned (phased) arrays (ESAs), which transmit the RF waves in a particular direction without mechanical movement. Each emitter varies its phase and amplitude to form a RADAR beam in a particular direction through constructive and destructive interference with other emitters.

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