Technologies for Photonic Sensor Systems.

Sensor systems provide a critical capability for maintaining situational awareness for defense and security applications. Advances in sensor system technology over the last fifty years have created sophisticated systems to collect, detect, process, and respond to radiation over much of the electromagnetic spectrum. In this article, we discuss the physical processes important to the design of photonic sensing, review programs advancing sensor technologies at the Defense Advanced Research Projects Agency, and provide some insight to future capabilities. [ABSTRACT FROM AUTHOR]