A novel algorithm for high sensitivity in measuring surface variation based on volume holography

Ching Cherng Sun, Chih Yuan Hsu, Wei-Chia Su, Yuh Ouyang, Jenq Yang Chang

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A novel design for the precise measurement of surface variation based on volume holography is proposed. The volume hologram is a spatial filter, which records the index grating corresponding to the interference fringes by a plane wave and a divergent spherical wave. In the measuring process, a point source attached to a probe is used to read the hologram. A precise measurement can be achieved because the horizontal displacement of the point source is very sensitive to the hologram. This sensitivity is higher than that of a holographic confocal microscopy based on the longitudinal displacement.

Original languageEnglish
Pages (from-to)319-321
Number of pages3
JournalMicrowave and Optical Technology Letters
Issue number4
Publication statusPublished - 2002 Aug 20


All Science Journal Classification (ASJC) codes

  • Electrical and Electronic Engineering
  • Atomic and Molecular Physics, and Optics

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