Refractive index and oscillator parameters in TlGaS2, TlGaSe2 and TlInS2 layered crystals


HASANLI N.

JOURNAL OF OPTOELECTRONICS AND ADVANCED MATERIALS, cilt.13, ss.49-52, 2011 (SCI İndekslerine Giren Dergi) identifier

  • Cilt numarası: 13
  • Basım Tarihi: 2011
  • Dergi Adı: JOURNAL OF OPTOELECTRONICS AND ADVANCED MATERIALS
  • Sayfa Sayıları: ss.49-52

Özet

The optical properties of TlGaS2, TlGaSe2, and TlInS2 crystals have been investigated through the transmission and reflection measurements at room temperature in the wavelength range of 400-1100 nm. These measurements allowed determination of spectral dependence of the refractive index for all crystals studied. The dispersion of the refractive index is discussed in terms of the Wemple-DiDomenico single-effective-oscillator model. The refractive index dispersion parameters: the oscillator energies, the dispersion energies, and the zero-frequency dielectric constants and refractive indices were determined.