The optical constants of thin film materials calculated from the reflectance and transmittance measurements

Donyau Chiang, Cheng Hung Chu, Hai Pang Chiang, Din Ping Tsai

Research output: Chapter in book / Conference proceedingConference article published in proceeding or bookAcademic researchpeer-review


The optical constants including the refraction index n and extinguished coefficient k of the variety of materials are calculated from their reflection and transmittance measurements with measured wavelengths. We derive the reflectance and transmittance equations associated to the material film optical constants. The organic and inorganic materials used for optical recording medium materials are examined. The organic dyes show that significant optical constants vary with the laser wavelength, in comparison to the inorganic phase-change materials. This is an evidence to indicate the complicated bonding structure in the organic dyes within the measured wavelength ranges.

Original languageEnglish
Title of host publicationOptical Data Storage, ODS 2009
Publication statusPublished - May 2009
Externally publishedYes
EventOptical Data Storage, ODS 2009 - Lake Buena Vista, FL, United States
Duration: 11 May 200913 May 2009

Publication series

NameOptics InfoBase Conference Papers
ISSN (Electronic)2162-2701


ConferenceOptical Data Storage, ODS 2009
Country/TerritoryUnited States
CityLake Buena Vista, FL


  • Chalcogenide alloy
  • Cyanine dye
  • Optical constants
  • Reflectance
  • Transmittance

ASJC Scopus subject areas

  • Instrumentation
  • Atomic and Molecular Physics, and Optics

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