Remote, Noninvasive, Cardio-Vascular Activity Tracer and Hard Target Evaluator

A system for monitoring vibrations in a region of interest of a monitored target, the system comprising:

• a photo-EMF detector assembly having a photo-EMF detector and an amplifier circuit, and configured to generate an output signal indicative of the vibrations;
• a laser assembly having:
• a laser generator configured to output a source beam;
• and
• a beam splitter device configured to split the source beam into an interrogating beam and a reference beam;
• a mirror angled with respect to the pulsed laser system to direct the reference beam onto the photo-EMF detector;
• telescope optics configured to amplify a return signal that is reflected from the region of interest to thereby generate an amplified return signal, and to direct the amplified return signal onto the photo-EMF detector to form interferometric fringes;
• and
• a monitoring circuit configured to receive the output signal from the photo-EMF detector, wherein the output signal is a current caused by motion of the interferometric fringes, compare the output signal to a baseline reference to ascertain a difference therebetween, and generate a diagnostic signal indicative of the difference;
• wherein the photo-EMF detector generates the output signal using information from the reference beam and the amplified return signal.