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How Lasers Work
Published : 2016-11-21 10:01:00

The word "laser" stands for "Light Amplification by Stimulated Emission of Radiation"..

Laser Technology products calculate distance by measuring the time of flight of very short pulses of infrared light. This differs from the traditional surveying instrument method of measuring phase shifts by comparing the incoming wavelength with the phase of the outgoing light.

Any solid object will reflect back a certain percentage of the emitted light energy. This only needs to be a small percentage for our sensitive detector to pick it up. We measure the time it takes a laser pulse to travel to the target and back with a precision, crystal-controlled time base. Knowing the constant speed of light, it is then easy to calculate the distance traveled.