Laser prototype improves bomb detection

angry tapir writes: "Scientists at the University of New South Wales (UNSW) in Australia have developed a prototype laser device capable of detecting tiny traces of explosive vapour, an invention that has the potential to put bomb sniffer dogs out of a job. The prototype – a pulsed, quantum laser-based, cavity ring-down spectrometer – is being tested at the US government’s Los Alamos National Laboratory in New Mexico."