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Determination of the Dispersion of the Principal Refractive Indices for Birefringent Polypropylene Films

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We present a novel method for determining the dispersion of the refractive indices of birefringent films, based on treatment of transmission spectra, in which we observe interference of light. The dispersion curves n x (λ) and n y (λ) were determined by treatment of transmission spectra obtained for normal incidence of radiation on a P2-25 birefringent fi lm, and n z (λ) was determined for oblique incidence of radiation. From the results of determination of the dispersions of the principal refractive indices of a birefringent P2-25 polypropylene film (Mogilevkhimvolokno OAO, Belarus), we established that the sample is a negative biaxial retarder with N z = 2.9.

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Authors and Affiliations

  1. Institute of Chemistry of New Materials, National Academy of Sciences of Belarus, 36 F. Skorina Str., Minsk, 220141, Belarus

    V. S. Bezruchenko, An. A. Murauski & Al. A. Muravsky

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  1. V. S. Bezruchenko
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  2. An. A. Murauski
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  3. Al. A. Muravsky
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Correspondence to V. S. Bezruchenko.

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Translated from Zhurnal Prikladnoi Spektroskopii, Vol. 81, No. 3, pp. 457–463, May–June, 2014.

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Bezruchenko, V.S., Murauski, A.A. & Muravsky, A.A. Determination of the Dispersion of the Principal Refractive Indices for Birefringent Polypropylene Films. J Appl Spectrosc 81, 476–482 (2014). https://doi.org/10.1007/s10812-014-9957-y

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  • DOI: https://doi.org/10.1007/s10812-014-9957-y

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