A diagnosis apparatus comprises a shutter (11) disposed between a light source (1) and a lens (12) opposed to biological tissue (13); a multi-channel spectrometer (polychromator) (16) for detecting a light emitting plume (14); a photodetector (5) for detecting a portion of a laser pulse from the light...http://www.google.fr/patents/US6463314?utm_source=gb-gplus-shareBrevet US6463314 - Nanosecond gate spectroscopic diagnostic device
