Title:	Optical Riblet Sensor: Beam Parameter Requirements for the Probing Laser Source
Authors:	Tschentscher, Juliane Hochheim, Sven Brüning, Hauke Brune, Kai Voit, Kay-Michael Imlau, Mirco
Abstract:	Beam parameters of a probing laser source in an optical riblet sensor are studied by considering the high demands on a sensors’ precision and reliability for the determination of deviations of the geometrical shape of a riblet. Mandatory requirements, such as minimum intensity and light polarization, are obtained by means of detailed inspection of the optical response of the riblet using ray and wave optics; the impact of wavelength is studied. Novel measures for analyzing the riblet shape without the necessity of a measurement with a reference sample are derived; reference values for an ideal riblet structure obtained with the optical riblet sensor are given. The application of a low-cost, frequency-doubled Nd:YVO4 laser pointer sufficient to serve as a reliable laser source in an appropriate optical riblet sensor is discussed.
Citations:	Sensors, 16, 04, 2016, 458
URL:	https://osnadocs.ub.uni-osnabrueck.de/handle/urn:nbn:de:gbv:700-2016040414376
Subject Keywords:	optical riblet sensor; wave fronts and ray tracing; drag reduction; laser beam parameters; riblet degradation
Issue Date:	4-Apr-2016
License name:	Namensnennung 4.0 International
License url:	http://creativecommons.org/licenses/by/4.0/
Type of publication:	Einzelbeitrag in einer wissenschaftlichen Zeitschrift [article]
Appears in Collections:	FB06 - Hochschulschriften Open-Access-Publikationsfonds

This item is licensed under a Creative Commons License