A FAST PHASEMETER FOR INTERFEROMETRIC APPLICATIONS WITH AN ACCURACY IN THE PICOMETER REGIME

Paul Köchert, Jens Flügge, Christoph Weichert, Rainer Köning, Eberhard Manske
Abstract:
The lock-in principle is a preferred method to determine the phase difference between elec trical signals of heterodyne interferometer. A phase meter based on this method was devel oped at PTB allowing to detect fractions of an optical fringe in the range of a few picometers, which is verified by experimental results.
Download:
IMEKO-TC14-2011-34.pdf
DOI:
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Event details
IMEKO TC:
TC14
Event name:
TC14 LMPMI Symposium 2011
Title:

10th Symposium on Laser Metrology for Precision Measurement and Inspection in Industry

Place:
Braunschweig, GERMANY
Time:
12 September 2011 - 14 September 2011
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