Laser Doppler Vibrometry

Laser Doppler Vibrometry (LDV) is a non-contact measurement technique that uses laser beams to detect vibrations and movements of a surface. When laser light hits a vibrating object, the reflected light's frequency shifts slightly—a phenomenon called the Doppler effect. By analyzing this frequency change, LDV can precisely measure the velocity and displacement of the surface without physically touching it. This method is widely used in engineering, materials testing, and acoustics to study the dynamic behavior of structures with high accuracy.