Remote Detection via Quantum Coherence
Abstract: There is nothing so practical as a good theory. As a case in point, the compelling need for standoff
detection of hazardous gases and vapor indicators of explosives has motivated the development of remotely
pumped schemes that produce radiation in the backward direction [1,2]. Moving from conceptualization to
theoretical analysis and experimental verification, we demonstrate that high gain can be achieved in air. Backward
air lasing provides possibilities for remote detection , as will be discussed.