Optical Riblet Sensor: Beam Parameter Requirements for the Probing Laser Source

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Titel: Optical Riblet Sensor: Beam Parameter Requirements for the Probing Laser Source
Autor(en): Tschentscher, Juliane
Hochheim, Sven
Brüning, Hauke
Brune, Kai
Voit, Kay-Michael
Imlau, Mirco
Zusammenfassung: 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.
Bibliografische Angaben: Sensors, 16, 04, 2016, 458
URL: https://repositorium.ub.uni-osnabrueck.de/handle/urn:nbn:de:gbv:700-2016040414376
Schlagworte: optical riblet sensor; wave fronts and ray tracing; drag reduction; laser beam parameters; riblet degradation
Erscheinungsdatum: 4-Apr-2016
Enthalten in den Sammlungen:FB04 - Hochschulschriften
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