Non-interferometric phase retrieval using refractive index manipulation

Chyong-Hua Chen, Hsin Feng Hsu, Hou-Ren Chen, Wen Feng Hsieh

Research output: Contribution to journalArticle

7 Scopus citations

Abstract

We present a novel, inexpensive and non-interferometric technique to retrieve phase images by using a liquid crystal phase shifter without including any physically moving parts. First, we derive a new equation of the intensity-phase relation with respect to the change of refractive index, which is similar to the transport of the intensity equation. The equation indicates that this technique is unneeded to consider the variation of magnifications between optical images. For proof of the concept, we use a liquid crystal mixture MLC 2144 to manufacture a phase shifter and to capture the optical images in a rapid succession by electrically tuning the applied voltage of the phase shifter. Experimental results demonstrate that this technique is capable of reconstructing high-resolution phase images and to realize the thickness profile of a microlens array quantitatively.
Original languageEnglish
Article number46223
JournalScientific Reports
Volume7
DOIs
StatePublished - 7 Apr 2017

Keywords

  • SPATIAL LIGHT-MODULATOR
  • INTENSITY EQUATION
  • HILBERT TRANSFORM
  • MICROSCOPY
  • TRANSPORT
  • Contrast
  • Focus

Fingerprint Dive into the research topics of 'Non-interferometric phase retrieval using refractive index manipulation'. Together they form a unique fingerprint.

  • Cite this