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FR4 Electromagnetic Scanner Based Fourier Transform Spectrometer

[+] Author Affiliations
Utku Baran, Kivanc Hedili, Selim Olcer, Hakan Urey

Koç University, Istanbul, Turkey

Paper No. DETC2011-48161, pp. 465-469; 5 pages
  • ASME 2011 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference
  • Volume 3: 2011 ASME/IEEE International Conference on Mechatronic and Embedded Systems and Applications, Parts A and B
  • Washington, DC, USA, August 28–31, 2011
  • Conference Sponsors: Design Engineering Division and Computers and Information in Engineering Division
  • ISBN: 978-0-7918-5480-8
  • Copyright © 2011 by ASME


Fourier transform spectrometers require an interferometric optical setup, where a precisely controlled motion of a mirror on a moving stage and a reference mirror are required. FR4, a common printed circuit board substrate, and the standard PCB technology is used to develop a simple gimbaled scanner structure with high precision to implement into a low-cost and viable Fourier Transform Spectrometer. On top of the corner cube reflector based tilt-insensitive setup, magnetic actuation optimization using twin opposing magnets solution is found to be helpful to enhance interference data. Large Lorentz force is generated for out-of-plane deflection while the torsional motion of the scanner is restricted. ±162.8um out-of-plane translation at 149 Hz resonance is realized with torsion effect deteriorated result which corresponds to <1nm spectral resolution at visible wavelengths.

Copyright © 2011 by ASME



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