What is a Laser interferometer?

A laser interferometer is a device that uses laser light to measure position or displacement with extremely high precision over long distances. The interferometer utilizes the interference patterns that arise when two or more light paths overlap to measure minute displacements. Laser interferometers offer extremely precise measurements and are used in industries and research fields that require nanometer-level accuracy. They are primarily used for the alignment of optical instruments, evaluation of machining precision, and measurement of vibrations or deformations. By measuring changes in the interference patterns based on the wavelength of light, laser interferometers can detect very small movements or changes in distance. Furthermore, since optical measurements are non-contact, they cause minimal impact on the sample and enable high-precision measurements.

Application of Laser interferometer

✅ Calibration of optical instruments
A laser interferometer is used to determine and adjust the position of precision optical instruments.
✅ Inspection of machining precision
It is used to measure dimensional displacements to evaluate the precision of precision machining.
✅ Vibration measurement
Used for measuring minute vibrations in machinery or structures.
✅ Measurement of material deformation
Used to measure the displacement of materials or structures when they are subjected to external forces, with nanometer-level precision.

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