Real-time measurement of photo-induced effects in 9,10-phenanthrenequinone- doped poly(methyl methacrylate) photopolymer by phase-modulated ellipsometry

C. I. Chuang, Yi Nan Hsiao, Shiuan-Huei Lin, Yu Faye Chao*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

15 Scopus citations

Abstract

The photo-induced effects in 9,10-phenanthrenequinone-doped (PQ-doped) poly(methyl methacrylate) (PMMA) photopolymer were studied by phase-modulated ellipsometry and polarimetry in real time. The PQ-doped PMMA was exposed to an Ar/Kr tunable laser at the wavelength of 488 nm and measured by a HeNe laser (632.8 nm). We measured the induced birefringence and the variation of the refractive index separately during exposure; there was a difference of three orders of magnitude between these two effects. This suggested that the physical mechanism of holographic recording in PQ-doped PMMA is mainly due to the photo-induced variation in the refractive index.

Original languageEnglish
Pages (from-to)3279-3283
Number of pages5
JournalOptics Communications
Volume283
Issue number17
DOIs
StatePublished - 1 Sep 2010

Keywords

  • Anisotropy axis
  • Birefringence
  • Ellipsometry
  • Photopolymer
  • Polarimetry
  • Refractive index

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