We report on a digital phasemeter for application in precision length measurement using laser interferometry. Our interferometer demonstrates a length sensitivity of 0.5pm/√Hz above 5Hz, and a cyclic error of better than 50pm.
© 2012 OSA
M. Gray, T. McRae, M. Hsu, J. Herrmann, and D. Shaddock, "A digital phasemeter for precision length measurements," in Conference on Lasers and Electro-Optics 2012, OSA Technical Digest (online) (Optical Society of America, 2012), paper JW1C.4.
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