Synthetic spatial coherence function for optical tomography and profilometry: Influence of the observation condition

Zhihui Duan, Hirokazu Kozaki, Yoko Miyamoto, Joseph Rosen, Mitsuo Takeda

Research output: Contribution to journalConference articlepeer-review

3 Scopus citations

Abstract

We address the basic issue of the observation condition in a synthetic coherence function applied to optical tomography and profilometry, which has not been made clear in previous papers. We present a more general theory for interference fringe formation for spatial coherence control with a synthetic source. The generalized theory predicts the existence of the observation condition that can make the measurement insensitive to the tilt of the object, which will open the new possibility of measuring objects with rough surfaces. We present experimental results that quantitatively verify the validity of the principle and the prediction.

Original languageEnglish
Article number27
Pages (from-to)236-243
Number of pages8
JournalProceedings of SPIE - The International Society for Optical Engineering
Volume5531
DOIs
StatePublished - 1 Dec 2004
EventInterferometry XII: Techniques and Analysis - Denver, CO, United States
Duration: 2 Aug 20043 Aug 2004

Keywords

  • Coherence control
  • Observation condition
  • Optical tomography
  • Profilometry
  • Spatial coherence

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Computer Science Applications
  • Applied Mathematics
  • Electrical and Electronic Engineering

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