C. D. Measurements Ltd

Keysight Technologies are world leaders in the development and application of laser interferometry systems for a wide range of precision measurements. The Keysight systems use a highly stable HeNe laser tube. This is combined with the two frequency interferometry method for superior measurements. The twin frequency system uses a frequency counting method rather than an intensity based system, for more reliable measurements over linear lengths of up to 80m. For more information on the basic principles of two frequency interferometry click here.