Continuous frequency Sweep Laser Unit for Laser Interferometry

摘要

The continuous frequency sweep laser unit has a laser source (SL) which is swept across a frequency band. The source feeds a two channel interferometer. The first channel has an interferometric object (Iobj) measuring an unknown distance (Dobj). The second channel has a reference interferometer (Iref) with a distance step (Dref). Dimensional measurement can be taken with the unit.