Method for remote sensing of targets in a transparent medium using ultra-short intense lasers

摘要

There is described a method for identifying at least one target in a substantially transparent medium. High-power, ultra-short laser pulses are transmitted into the medium. A diameter of the laser pulses is enlarged and the laser pulses having an enlarged beam diameter are focused using a focusing element so as to generate filaments substantially near a geometrical focal zone of the focusing element, whereby a spontaneous fluorescence signal (amplified through amplified spontaneous emission or not) is detected and analyzed to identify the target.