caa a22 4500 445370637 CHVBK 20180317142945.0 cr unu---uuuuu 170323e20111101xx s 000 0 eng 10.1007/s00340-011-4512-5 doi (NATIONALLICENCE)springer-10.1007/s00340-011-4512-5 A precise and wide-dynamic-range displacement-measuring homodyne quadrature laser interferometer [Elektronische Daten] [T. Požar, P. Gregorčič, J. Možina] We present a fast, displacement-measuring, single-pass, two-detector homodyne quadrature laser interferometer and compare its performance with an arm-compensated, proportional, integral-derivative-controlled Michelson interferometer. Special attention is given to the extension of the dynamic range. The wide dynamic range is achieved by an accurate fringe subdivision based on an enhanced ellipse-specific fitting of the scattered Lissajous curve and by increasing the total displacement using the quadrature-detection technique. The common periodic deviations, i.e., the unequal AC amplitudes, the DC offsets, and the lack of quadrature are determined and reduced by data processing based on an ellipse-specific, least-squares fitting to obtain nanometric accuracy. The performance of the described interferometer is demonstrated through the measurement of high-amplitude and high-frequency laser-induced ultrasound. Springer-Verlag, 2011 Požar T. Faculty of Mechanical Engineering, University of Ljubljana, Aškerčeva 6, 1000, Ljubljana, Slovenia aut Gregorčič P. Faculty of Mechanical Engineering, University of Ljubljana, Aškerčeva 6, 1000, Ljubljana, Slovenia aut Možina J. Faculty of Mechanical Engineering, University of Ljubljana, Aškerčeva 6, 1000, Ljubljana, Slovenia aut Applied Physics B Springer-Verlag 105/3(2011-11-01), 575-582 0946-2171 105:3<575 2011 105 340 https://doi.org/10.1007/s00340-011-4512-5 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s00340-011-4512-5 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Požar T. Faculty of Mechanical Engineering, University of Ljubljana, Aškerčeva 6, 1000, Ljubljana, Slovenia aut NATIONALLICENCE 700 1- Gregorčič P. Faculty of Mechanical Engineering, University of Ljubljana, Aškerčeva 6, 1000, Ljubljana, Slovenia aut NATIONALLICENCE 700 1- Možina J. Faculty of Mechanical Engineering, University of Ljubljana, Aškerčeva 6, 1000, Ljubljana, Slovenia aut NATIONALLICENCE 773 0- Applied Physics B Springer-Verlag 105/3(2011-11-01), 575-582 0946-2171 105:3<575 2011 105 340 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer