Abstract
The absorption and circular-dichroism spectra of neodymium-doped crystals of langasite La3Ga5SiO14 and the compounds La3Ga5.5Nb0.5O14 and Pb3Ga2Ge3.92Si0.08O14, isostructural with langasite, are investigated in the wavelength range 320–940 nm. Electronic transitions in Nd atoms, which substitute the main cation of the salts (La or Pb) in the positions with the local symmetry C 2, are observed in the spectra. All transitions observed in the absorption spectrum are also active in the circular-dichroism spectrum. Detailed analysis is performed for several (well separated) bands: Dipole strengths D ok , rotation strengths R ok , and the anisotropy factors G ok are calculated. Some specific features of the spectra obtained are noted and their possible relationship with the structure of impurity centers of neodymium and effect on the intensity of the Stark components are discussed.
This is a preview of subscription content, log in via an institution to check access.
Similar content being viewed by others
References
E. L. Belokoneva, M. A. Simonov, B. V. Mill’, et al., Dokl. Akad. Nauk SSSR 255(5), 1099 (1980) [Sov. Phys. Dokl. 25, 954 (1980)].
A. A. Kaminskii, B. V. Mill’, and S. É. Sarkisov, Physics and Spectroscopy of Laser Crystals (Nauka, Moscow, 1986), p. 197 [in Russian].
Fomos Technology, Moscow, www.fomos-t.ru.
S. Q. Wang and S. Uda, J. Cryst. Growth 250, 463 (2003).
A. E. Blagov, G. D. Mansfeld, B. V. Mill, et al., Proc. of the IEEE Intern. Frequency Control Symp., Montreal, Canada (2004), p. 634.
B. A. Maksimov, V. N. Molchanov, B. V. Mill’, et al., Kristallografiya 50(5) (2005) [Crystallogr. Rep. 50, 751 (2005)].
E. L. Belokoneva, S. Yu. Stefanovich, Yu. V. Pisarevskii, and A. V. Mosunov, Zh. Neorg. Khim. 45(11), 1786 (2000).
K. A. Kaldybaev, A. F. Konstantinova, and Z. B. Perekalina, Gyrotropy of Uniaxial Absorbing Crystals (In-t Sotsial’no-ékonomicheskikh i Proizvodstvenno-ékologicheskikh Problem Investirovaniya, Moscow, 2000) [in Russian].
V. Gasparik, Acta Phys. Slov. 28(3), 222 (1978).
J. R. Quagliano, G. W. Burdick, D. P. Glover-Fisher, and F. S. Richardson, Chem. Phys. 201(2–3), 321 (1995).
J. A. Shellman, Chem. Rev. 75(23), 323 (1976).
V. I. Burkov, A. V. Egorysheva, A. Ya. Vasil’ev, et al., Neorg. Mater. 38(10), 1228 (2002).
A. V. Butashin, L. E. Li, A. F. Konstantinova, and I. A. Gudim, Kristallografiya 49(3), 514 (2004) [Crystallogr. Rep. 49, 459 (2004)].
V. I. Burkov, V. A. Kizel’, N. I. Leonyuk, et al., Kristallografiya 29(1), 101 (1984) [Sov. Phys. Crystallogr. 29, 58 (1984)].
V. I. Burkov, V. A. Kizel’, N. I. Leonyuk, and N. M. Sitnikov, Kristallografiya 27(1), 196 (1982) [Sov. Phys. Crystallogr. 27, 121 (1982)].
F. S. Richardson, Inorg. Chem. 9(9), 2806 (1980).
F. S. Richardson, J. Less-Common Met. 149(1), 161 (1989).
Author information
Authors and Affiliations
Additional information
__________
Translated from Kristallografiya, Vol. 50, No. 6, 2005, pp. 1031–1037.
Original Russian Text Copyright © 2005 by Burkov, Butashin, Fedotov, Konstantinova, Gudim.
Rights and permissions
About this article
Cite this article
Burkov, V.I., Butashin, A.V., Fedotov, E.V. et al. Circular dichroism of some Nd-doped crystals of the langasite family. Crystallogr. Rep. 50, 954–960 (2005). https://doi.org/10.1134/1.2132402
Received:
Issue Date:
DOI: https://doi.org/10.1134/1.2132402