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Fundamental absorption of calcium, magnesium, and lithium fluorides in the range of 8–12 μm

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Abstract

The fundamental absorption of calcium, magnesium, and lithium fluorides in the range of 8–12 μm has been studied experimentally by the spectrophotometric method. The known and experimentally obtained values of the absorption coefficients of these materials have been analyzed. It has been shown that the values experimentally measured in the range of 8–12 μm obey the Uhrbach rule and the multiphoton absorption determines the long-wavelength transmission cutoff of pure optical materials. The results presented make it possible to suggest that plates made of LiF and CaF2 crystals and of optical ceramics based on MgF2 can be used to fabricate calibrated radiation attenuators in the spectral range of 8–12 μm.

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Authors and Affiliations

  1. Tver State University, Tver, 170100, Russia

    I. A. Kaplunov

  2. Astrofizika National Center of Laser Systems and Complexes, Moscow, 125424, Russia

    V. E. Rogalin & I. S. Tsenina

Authors
  1. I. A. Kaplunov
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  2. V. E. Rogalin
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  3. I. S. Tsenina
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Correspondence to I. A. Kaplunov.

Additional information

Original Russian Text © I.A. Kaplunov, V.E. Rogalin, I.S. Tsenina, 2014, published in Optika i Spektroskopiya, 2014, Vol. 117, No. 4, pp. 590–592.

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Kaplunov, I.A., Rogalin, V.E. & Tsenina, I.S. Fundamental absorption of calcium, magnesium, and lithium fluorides in the range of 8–12 μm. Opt. Spectrosc. 117, 572–574 (2014). https://doi.org/10.1134/S0030400X14100105

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  • DOI: https://doi.org/10.1134/S0030400X14100105

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