Disclosed is a system and method for remote detection and identification of unknown chemical species in gaseous, aerosol, and liquid states. A pulsed infrared laser is directed at an unknown chemical mass which absorbs energy at the laser wavelength. Due to molecular energy transfer processes, the absorbed...http://www.google.de/patents/US4496839?utm_source=gb-gplus-sharePatent US4496839 - System and method for remote detection and identification of chemical species by laser initiated nonresonant infrared spectroscopy
