International Journal of Infrared and Millimeter Waves

, Volume 18, Issue 9, pp 1663–1679

Measurement of the optical constants of crystal quartz at 10 K and 300 K in the far infrared spectral range: 10–600 cm−1

  • F. Bréhat
  • B. Wyncke

DOI: 10.1007/BF02678278

Cite this article as:
Bréhat, F. & Wyncke, B. Int J Infrared Milli Waves (1997) 18: 1663. doi:10.1007/BF02678278


The optical constants of crystal quartz in the far infrared (10 – 600 cm−1) are reported at room temperature and at 10 K, for both polarizations parallel and perpendicular to the c-axis, respectively extraordinary and ordinary ray. These constants are obtained from the analysis of the transmissivity channeled spectra below 300 cm−1, and from the analysis of the reflectivity spectra between 300 – 600 cm−1, measured by using a grating infrared spectrometer. The extrapolated zero frequency refractive indices of quartz obtained in the present work are: no(0) = 2.106 and ne(0) = 2.153 at 300 K; no(0) = 2.072 and ne(0) = 2.130 at 10 K.

Key words

Far infrared spectroscopy Optical constants Refractive index Absorption index 

Copyright information

© Plenum Publishing Corporation 1997

Authors and Affiliations

  • F. Bréhat
    • 1
  • B. Wyncke
    • 1
  1. 1.Equipe Infrarouge — U.R.A. 809 C.N.R.S.Université Henri PoincaréVandoeuvre lès Nancy CédexFrance

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