Technology: Laser Doppler Vibrometer

Laser Doppler vibrometry is an optical method for non-contact measurement of vibrations. Modern laser Doppler vibrometers (LDV) measure mechanical vibrations with the highest precision. No other technology enables vibration measurements with comparable frequency range, sensitivity and resolution along with flexibility in stand-off and working distances. This makes LDV the unbeatable instrument of choice when it comes to fast and precise vibration measurements.

Measurement Principle

Working Principle of a Laser Doppler Vibrometer
Doppler Effect, Interferometry and Demodulation
From the Laser Beam to the Vibrational Parameters

Laser Source

Typical Laser-beam Sources of a Vibrometer
Helium-Neon or Infrared Laser – Differences and Scope

Signal Processing

Digital Processing of the Measurement Data
From Raw Data to Physical Vibration Information