DETERMINATION OF THE OPTICAL CONSTANTS AND THICKNESS OF SEMITRANSPARENT THIN FILMS USING SUCCESSIVE INTERFERENCE FRINGES OF TRANSMISSION SPECTRA

2005 ◽  
Vol 12 (03) ◽  
pp. 425-431 ◽  
Author(s):  
F. E. GHODSI

A simple method for determination of optical constants and thickness of semitransparent thin films deposited onto a transparent finite substrate has been developed. The method is based on the analysis of successive interference fringes of transmission spectra created by the films. It is essentially not necessary to obtain the envelope of transmission spectra in this method. The determined values of optical parameters are in good agreement with their true values used to generate transmission data. The accuracy of method in determining refractive index and thickness of the films is better than 1%.

1999 ◽  
Vol 342 (1-2) ◽  
pp. 153-159 ◽  
Author(s):  
Liberato De Caro ◽  
Maria Cristina Ferrara

1996 ◽  
Vol 286 (1-2) ◽  
pp. 164-169 ◽  
Author(s):  
M Kubinyi ◽  
N Benkö ◽  
A Grofcsik ◽  
W.Jeremy Jones

Vacuum ◽  
2011 ◽  
Vol 86 (4) ◽  
pp. 422-428 ◽  
Author(s):  
N.M. Kamble ◽  
R.B. Tokas ◽  
A. Biswas ◽  
S. Thakur ◽  
D. Bhattacharyya ◽  
...  

1985 ◽  
Vol 39 (3) ◽  
pp. 405-408 ◽  
Author(s):  
R. T. Graf ◽  
J. L. Koenig ◽  
H. Ishida

Thin films of poly(vinyl chloride), poly(methyl methacrylate), and poly(styrene) were analyzed by Fourier transform infrared spectroscopy. The interference fringes present in the transmission spectra of these samples were used to determine film thickness and average refractive index. Subsequent Kramers-Kronig analysis of these transmission spectra provided the dispersion of the refractive index and the absorption index across the entire mid-infrared region. Interference fringes were absent in the optical constant spectra, and good agreement was obtained between our optical constant spectra and those of other authors.


1981 ◽  
Vol 20 (9) ◽  
pp. L665-L668 ◽  
Author(s):  
Satoshi Yamasaki ◽  
Hideyo Okushi ◽  
Akihisa Matsuda ◽  
Hidetoshi Oheda ◽  
Nobuhiro Hata ◽  
...  

1988 ◽  
Vol 41 (3) ◽  
pp. 469
Author(s):  
HJ Juretschke ◽  
HK Wagenfeld

Unless special precautions are taken, the experimental determination of two-beam structure factors to better than 1 % may include contributions from neighbouring n-beam interactions. In any particular experimental configuration, corrections for such contributions are easily carried out using the modified two-beam structure factor formalism developed recently (Juretschke 1984), once the full indexing of the pertinent n-beam interactions is known. The method is illustrated for both weak and strong primary reflections and its applicability in special cases, as well as for less than perfect crystals, is discussed.


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