Working principle of a laser doppler vibrometer
Doppler effect, interferometry and demodulation
From the laser beam to the vibrational parameters
Laser Doppler vibrometry is an optical technique for non-contact measurement of vibrations. Modern laser doppler vibrometers (LDV) record mechanical vibrations with highest accuracy. No other technology enables vibration measurements with a comparable frequency range, sensitivity and resolution. Thus, vibrometers are the unbeaten instrument of choice when it comes to fast, accurate and precise vibration measurements.