Ukrainian Journal of Physical Optics 

Number  3, Volume 7,  2006

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Refractive Indices of Glasses of CaO-Ga2O3-GeO2 System
1,2Padlyak B.V., 1Vlokh O.G., 3Romanyuk M.M., 1Romanyuk G.M.

1Institute of Physical Optics, 23 Dragomanov St., 79005 Lviv, Ukraine
2Department of Physics, Kazimierz Wielki University of Bydgoszcz 11 Weyssenhoff Sq., 85-072 Bydgoszcz, Poland
3Department of Physics, National University “Lviv Polytechnic” 2 Bandera St., 79013 Lviv, Ukraine

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The results for the refractive indices of undoped and Nd- and Ce-doped glasses of CaO-Ga2O3-GeO2 system are obtained and analyzed. The glasses with the garnet (Ca3Ga2Ge3O12) and Ca-gallogermanate (Ca3Ga2Ge4O14) compositions have been obtained by high-temperature synthesis. Nd and Ce impurities have been added to the garnet-composition glass as Nd2O3 and Ce2O3 oxides in the amounts of 0.2 and 0.7 wt. %, respectively. The refractive indices of the glasses depend on the basic glass composition. In particular, the refractive index increases with increasing Ge content. The presence of Nd and Ce impurities in the garnet-composition glasses in the amounts larger than 0.1 wt. % gives rise to essential increase of the refractive indices. The average refractive indices for the glasses with Ca3Ga2Ge4O14 composition are considerably smaller than those of the corresponding crystals with the garnet and Ca-gallogermanate structure. Significant deviations of the refractive index measured in different parts of Ca3Ga2Ge3O12 garnet crystal can be related to inhomogeneous distribution of Ge.

Key words: germanate glasses, optical properties, refractive index, dispersion

PACS: 42.70.Ce; 42.25.Gy; 78.20.Ci

doi 10.3116/16091833/7/3/142/2006
1. Damen JPM, Pistorius JA and Robertson JM, 1977. Mater. Res. Bull. 12: 73.
        doi:10.1016/0025-5408(77)90090-3  http://dx.doi.org/10.1016/0025-5408(77)90090-3
2. Mill BV, Butashin AV, Ellern AM and Majer AA, 1981. Izv. Akad. Nauk SSSR, Ser. Neorgan. Mater. 17: 1648.
3. Kaminskii AA, Belokoneva EL, Mill BV, Pisarevskii YuV, Sarkisov SE, Silvestrova IM, Butashin AV and Khodzhabagyan GG, 1984. Phys. Stat. Sol. (a), 86: 345.
4. Padlyak BV and Buchynskii PP Patent of Ukraine, No.UA 25235A, October 30, 1998.
5. Padlyak B, Mudry S, Halchak V, Korolyshyn A, Rybicki J and Witkowska A, 2000. Opt. Appl. 30: 691.
6. Chelstowski D, Witkowska A, Rybicki J, Padlyak B, Trapananti A and Principi E, 2003. Opt. Appl. 33: 125.
7. Padlyak BV, Kuklinski B and Grinberg M, 2002. Phys. Chem. Glasses, 43C: 392.
8. Padlyak BV, Kuklinski B and Buchynskii PP, 2003. Opt. Appl. 33: 175.
9. Padlyak B, Vlokh O and Sagoo K, 2005. Ukr. J. Phys. Opt. 6: 33.
        doi:10.3116/16091833/6/1/33/2005  http://dx.doi.org/10.3116/16091833/6/1/33/2005
10. Padlyak B, Vlokh O, Fabisiak K, Sagoo K and Kuklinski B, 2006. Opt. Mater. 28: 157.
        doi:10.1016/j.optmat.2004.10.038  http://dx.doi.org/10.1016/j.optmat.2004.10.038
11. Padlyak B, Vlokh O, Ryba-Romanowski W and Lisiecki R, 2006. Ukr. J. Phys. Opt. 7:149.
        doi:10.3116/16091833/7/4/149/2006  http://dx.doi.org/10.3116/16091833/7/4/149/2006
12. Kalitievskiy NI, 1978. Wave optics, Moscow: Nauka.
13. Nosenko AE, Otko AI, Kravchishin VV and Kostyk LV, 1983. Phys. Stat. Sol. (a) 80: 377.
14. Padlyak BV and Nosenko AE, 1988. Sov. Phys. Solid State 30: 1027.
15. Padlyak BV, Nosenko AE, Maksimenko VM and Kravchishin VV, 1993. Phys. Solid State 35: 1185.
16. Vlokh OG, Nosenko AE, Gamernyk RV and Bilyj AI, 1984. Kristallografia 29: 800.
17. Bilyj AI and Nosenko AE, 1985. Fiz. Elektron. 31: 61.
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