Title :
Effect of laser beam shape on differential-phase measurements
Author :
Pilgun, Yu V. ; Smirnov, E.N.
Author_Institution :
Nat. Taras Shevchenko Univ. of Kyiv, Kiev, Ukraine
Abstract :
Accuracy of differential-phase measurements depends on actual shape of laser beams formed by focusing optics. In present work two factors affecting beam profile are considered: aperture limiting and asymmetrical intensity irregularities. Ripples in measured signal are found to be caused by beam sidelobes. Asymmetry of beams leads to direction-dependent measurements.
Keywords :
laser beams; laser variables measurement; optical focusing; aperture limiting factors; asymmetrical intensity irregularity; beam sidelobes; differential-phase measurement; direction-dependent measurement; focusing optics; laser beam shape;
Conference_Titel :
Advanced Optoelectronics and Lasers (CAOL), 2010 International Conference on
Conference_Location :
Sevastopol
Print_ISBN :
978-1-4244-7043-3
DOI :
10.1109/CAOL.2010.5634221
