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The optical and thermal properties of Li₂O-BaO-Ga₂O₃-TeO₂-TiO₂-GeO₂ mid-infrared transmission glass

  • Journal of the Korean Crystal Growth and Crystal Technology
  • Abbr : J. Korean Cryst. Growth Cryst. Technol.
  • 2023, 33(6), pp.250~254
  • DOI : 10.6111/JKCGCT.2023.33.6.250
  • Publisher : The Korea Association Of Crystal Growth, Inc.
  • Research Area : Engineering > Materials Science and Engineering
  • Received : November 14, 2023
  • Accepted : December 1, 2023
  • Published : December 31, 2023

Minseong Hwang 1,  Jaeyeop Chung 1

1한국세라믹기술원

Accredited

ABSTRACT

In this study, Li₂O-BaO-Ga₂O₃-TeO₂-TiO₂-GeO₂ glasses with high transmittance in mid-infrared region and high refractive indices were successfully synthesized. The relationship between glass properties and glass composition was analyzed. In Li₂O-BaO-Ga₂O₃-TeO₂-TiO₂-GeO₂ glass system, as increasing TeO₂ concentration, the refractive index increases and the glass transition temperature decreases. In addition, as increasing BaO concentration, the refractive index increases without decrease of Abbe number. The IR-cut off wavelength shifted to the longer wavelength with increasing TeO₂ and BaO contents due to their large molecular weight. The glass transition temperature significantly decreases when BaO wasreplaced with Li₂O.

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