Abstract

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.

© 2009 SPIE