Remote Lasing in Humid Air from Atomic Hydrogen

What is it about?

Remote sensing applications often rely on the detection of a backscattered signal from the location of interest. The main limitation of this approach is that this backscattered signal is often incoherent and considerably weak. This compromises both the detection sensitivity as well as spatial measurement resolution, and increases the need for complex and costly signal collection systems to maintain a decent signal level. The ability to generate a strong, laser-like return signal in air (as discussed in this work) in place of this weak signal, could have profound implications for this area of research.

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