A proposition of a laser vibrometry measurement system for educational purposes

In the paper it proposes the achievement of a simple device based on laser which realizes the non-contact measurements of vibrations for the small inertia mass mechanical systems. From financial point of view we suppose that this experimentally device will be accessible to laboratories from educational system. The device contents one laser micro source, one small mirror fixed on the studied body and one reception system of the reflected wave. The reception wave is modulated by the mechanically system vibration.