Title :
A digital phasemeter for precision length measurements
Author :
Gray, Malcolm B. ; McRae, Terry ; Hsu, Magnus T L ; Herrmann, Jan ; Shaddock, Daniel A.
Author_Institution :
Nat. Meas. Inst., Lindfield, NSW, Australia
Abstract :
We report on a digital phasemeter for application in precision length measurement using laser interferometry. Our interferometer demonstrates a length sensitivity of 0.5 pm/√Hz above 5 Hz, and a cyclic error of better than 50 pm.
Keywords :
length measurement; light interferometry; measurement by laser beam; measurement errors; cyclic error; digital phasemeter; laser interferometry; length sensitivity; precision length measurements; Laser noise; Measurement by laser beam; Optical filters; Optical interferometry; Optical noise; Sagnac interferometers; Sensitivity;
Conference_Titel :
Lasers and Electro-Optics (CLEO), 2012 Conference on
Conference_Location :
San Jose, CA
Print_ISBN :
978-1-4673-1839-6
