Please use this identifier to cite or link to this item: http://hdl.handle.net/10995/102010
Title: Light scattering by ultrasonically-controlled small particles: System design, calibration, and measurement results
Authors: Kassamakov, I.
MacOni, G.
Penttilä, A.
Helander, P.
Gritsevich, M.
Puranen, T.
Salmi, A.
Hæggström, E.
Muinonen, K.
Issue Date: 2018
Publisher: SPIE
Citation: Light scattering by ultrasonically-controlled small particles: System design, calibration, and measurement results / I. Kassamakov, G. MacOni, A. Penttilä, et al. — DOI 10.1117/12.2289079 // Proceedings of SPIE - The International Society for Optical Engineering. — 2018. — Vol. 10539. — 105390R.
Abstract: We present the design of a novel scatterometer for precise measurement of the angular Mueller matrix profile of a mm- to μm-sized sample held in place by sound. The scatterometer comprises a tunable multimode Argon-krypton laser (with possibility to set 1 of the 12 wavelengths in visible range), linear polarizers, a reference photomultiplier tube (PMT) for monitoring the beam intensity, and a micro-PMT module mounted radially towards the sample at an adjustable radius. The measurement angle is controlled by a motor-driven rotation stage with an accuracy of 15'. The system is fully automated using LabVIEW, including the FPGA-based data acquisition and the instrument's user interface. The calibration protocol ensures accurate measurements by using a control sphere sample (diameter 3 mm, refractive index of 1.5) fixed first on a static holder followed by accurate multi-wavelength measurements of the same sample levitated ultrasonically. To demonstrate performance of the scatterometer, we conducted detailed measurements of light scattered by a particle derived from the Chelyabinsk meteorite, as well as planetary analogue materials. The measurements are the first of this kind, since they are obtained using controlled spectral angular scattering including linear polarization effects, for arbitrary shaped objects. Thus, our novel approach permits a non-destructive, disturbance-free measurement with control of the orientation and location of the scattering object. © COPYRIGHT SPIE. Downloading of the abstract is permitted for personal use only.
Keywords: CALIBRATION
LIGHT SCATTERING
OPTICAL PROPERTIES
POLARIZED REFLECTANCE
ARGON LASERS
CALIBRATION
DATA ACQUISITION
MATRIX ALGEBRA
METEOROLOGICAL INSTRUMENTS
OPTICAL INSTRUMENTS
OPTICAL PROPERTIES
PHOTOMULTIPLIERS
POLARIZATION
REFRACTIVE INDEX
ULTRASONIC TESTING
USER INTERFACES
ACCURATE MEASUREMENT
ARBITRARY-SHAPED OBJECTS
CALIBRATION PROTOCOLS
LINEAR POLARIZATION
MULTI-WAVELENGTH MEASUREMENTS
PHOTOMULTIPLIER TUBE
POLARIZED REFLECTANCES
PRECISE MEASUREMENTS
LIGHT SCATTERING
URI: http://hdl.handle.net/10995/102010
Access: info:eu-repo/semantics/openAccess
SCOPUS ID: 85045321308
PURE ID: 7141527
effd0b84-4d2f-4624-ada9-89a0e438ee87
ISSN: 0277786X
ISBN: 9781510615632
DOI: 10.1117/12.2289079
Appears in Collections:Научные публикации, проиндексированные в SCOPUS и WoS CC

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