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Low-Coherence Digital Holography for Enhanced 3D Measurement

[+] Author Affiliations
No-Cheol Park, Sungbin Jeon, Jae-Yong Lee, Se-Hwan Jang, Jang-Hyun Cho, Jin-Sang Lim, Young-Joo Kim, Young-Pil Park

Yonsei University, Seoul, Korea

Paper No. ISPS-MIPE2018-8518, pp. V001T10A002; 3 pages
doi:10.1115/ISPS-MIPE2018-8518
From:
  • ASME-JSME 2018 Joint International Conference on Information Storage and Processing Systems and Micromechatronics for Information and Precision Equipment
  • ASME-JSME 2018 Joint International Conference on Information Storage and Processing Systems and Micromechatronics for Information and Precision Equipment
  • San Francisco, California, USA, August 29–30, 2018
  • Conference Sponsors: Information Storage and Processing Systems Division
  • ISBN: 978-0-7918-5193-7
  • Copyright © 2018 by ASME

abstract

In this paper, phase quantitative measurements using digital holography (DH) with low-coherence light sources are presented. Compared with conventional laser-based DH, low-coherence light sources have advantages of better image quality, less speckle noise, and smaller system configurations. As a light source, we utilized light-emitting diode (LED) and quantum dot (QD) film. In particular, quantum dot film emits low-coherence lights with adjustable wavelength and high conversion efficiency, which has versatility for additional methods including dual-wavelength reconstruction. Experimental results verify the quality enhanced quantitative measurement of proposed methods compared with conventional systems.

Copyright © 2018 by ASME
Topics: Holography

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