Errors in the measurement of angle with a laser interferometer
Abstract
It is shown that when a laser interferometer is used for general angle measurement, including the calibration of angle measuring instruments such as rotary tables, errors of 30 inches or more can occur unless great care is taken in the optical alignment. On the other hand, if the instrument is carefully aligned, an accuracy of + or - 14 degrees occurs. The errors that occur are independent of the sensitivity of the interferometer system.
- Publication:
-
NASA STI/Recon Technical Report N
- Pub Date:
- April 1979
- Bibcode:
- 1979STIN...8019481R
- Keywords:
-
- Instrument Errors;
- Interferometers;
- Interferometry;
- Laser Applications;
- Angles (Geometry);
- Beam Splitters;
- Calibrating;
- Error Analysis;
- Instrument Orientation;
- Reflectors;
- Lasers and Masers