An international review of laser Doppler vibrometry: Making light work of vibration measurement - ScienceDirect
PSV-500 Scanning Vibrometer - Polytec
Non-Contact Vibration Sensors: Laser Doppler Vibrometry. Single Point Vibrometers, Scanning and Rotational Vibrometers, Microscope Based Systems, Dynamic Stress and Strain, Software and Accessories.