STABILITY OF AN OPTICAL DISPLACEMENT SENSOR USING A TWO-BEAM POLARIZATION INTERFEROMETER
Journal Title: Metrology and Measurement Systems - Year 2008, Vol 15, Issue 2
Abstract
Optical interferometers can measure displacement with a resolution of tens of picometers. Polarization interferometers are often used in such measurements, as they exhibit much lower sensitivity to most of the perturbations. Although properties of these interferometers designed for metrology applications are fairly well documented, little is known about the stability of such interferometers in typical laboratory settings, where they work without vibration isolation setups or controlled flow of air. In order to assess the stability of such interferometers, a representative two-beam polarization interferometer was built on an optical plate using off-the-shelf components. Based on the results of performed measurements it is possible to conclude that such interferometers can be used for measurements when a drift of the order of ten nanometers during a 30 s interval is acceptable.
Authors and Affiliations
PAWEŁ WIERZBA
Keywords
Related Articles
- EP ID EP113119
- DOI -
- Views 103
- Downloads 0
IMPROVEMENT OF GLASS BREAK ACOUSTIC SIGNAL DETECTION VIA APPLICATION OF WAVELET PACKET DECOMPOSITION<br />
The main subject of the authors' research are non-contact methods of glass break detection based on analysis of the acoustic signal generated during the event. This problem has essential meaning for modern cost-effective...
THE SOURCE OF ERRORS IN THE OSCILLOMETRIC BLOOD PRESSURE MEASUREMENTS
This report presents an analysis of the source of errors in the blood pressure measurements which use the oscillometric method. The basis of this method are the blood pressure oscillations in the occluding cuff which are...
2007 IEEE Instrumentation and Measurement Technology Conference
The annual Instrumentation and Measurement Technology Conference, sponsored by IEEE Instrumentation and Measurement Society (USA), was held this year in Poland. That conference, called IMTC 2007, was organized on May 1–3...
APPLICATION OF DIGITAL DITHER TO REDUCTION OF FEEDBACK D/A CONVERTERS INFLUENCE ON INTELLIGENT CYCLIC A/D CONVERTERS PERFORMANCE
The effect of termination of resolution growth, common for cyclic analogue-to-digital converters (CADCs) the, which appears after a definite (threshold) number of the conversion cycles, is investigated in the paper. The...
LINEAR OPERATION OF DISCRETE SIGNAL TRACKING
The idea of discrete signal "tracking" action was put into practice many years ago. So-called dot recorders are best examples of its application. The dynamics of the dot-recorder measuring mechanism can be linear and non...