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Spectral analysis of Nd3+ & Er3+: B2O3-(TeO2/CdO/ZnO)- Li2O-AlF3 glasses

B. SUDHAKAR REDDY1,* , S. BUDDHUDU2, S. R. K. RAO3, P. NARESH BABU3

Affiliation

  1. Department of Physics, Sri Venkateswara Degree College, Kadapa-516003, India
  2. Department of Physics, Sri Venkateswara University, Tirupati-517502, India
  3. Department of Physics, Indian Institute of Science, Bangalore - 560 012, India

Abstract

We report here on the development and optical spectral analysis of Nd3+ & Er3+ (0.5 mol %) ions doped three new glasses in the following composition: 10TeO2-69.5 B2O3-10 Li2O- 10 AlF3, 10CdO- 69.5 B2O3-10 Li2O- 10 AlF3, 10ZnO- 69.5 B2O3-10 Li2O- 10 AlF3. From the measured Vis-NIR absorption spectra of Nd3+: glasses have revealed ten absorption bands at 430, 459, 511, 526, 583, 626, 686, 746, 803 and 874 nm corresponding to the transitions of 4I9/2 → (2P1/2,2D5/2), 2G9/2, 4G9/2, (4G7/2,4K13/2), (4G5/2,2G7/2), 2H11/2, 4F9/2, (4F7/2,4S3/2), (4F5/2,4H9/2), and 4D3/2 respectively. NIR emission spectra of (0.5 mol %) Nd3+: B2O3-(TeO2/CdO/ZnO)-Li2O-AlF3 glasses have revealed three emission transitions (4F3/2 →4IJ=9/2, 11/2 &13/2) at 906, 1079 and 1349nm measured under excitation wavelength 514.5nm with an Ar+ laser (514.5nm) . Similarly from the measured Vis-NIR absorption spectra of Er3+: glasses have revealed nine absorption bands at 377, 405, 450, 486, 519, 543, 649,973 and 1529 nm which correspond to the transitions of 4I15/2 → 4G11/2, (2G9/2,4F9/2), 4F5/2, 4F7/2, (2H11/2,4G11/2), 4S3/2, 4F9/2,4I11/2 and 4I13/2 respectively. With an excitation at λexci =375nm, a bright green emission (4S3/2→4I15/2) at 547 nm has been observed from these erbium glasses. NIR emission spectra of (0.5 mol %) Er3+: B2O3-(TeO2/CdO/ZnO)-Li2O-AlF3 glasses have revealed one NIR emission transition (4I13/2 →4I15/2) at 1547 nm under excitation wavelength 514.5nm with an Ar+ laser (514.5 nm)..

Keywords

Nd3+ and Er3+: glasses, spectral analysis.

Submitted at: Jan. 18, 2008
Accepted at: Oct. 7, 2008

Citation

B. SUDHAKAR REDDY, S. BUDDHUDU, S. R. K. RAO, P. NARESH BABU, Spectral analysis of Nd3+ & Er3+: B2O3-(TeO2/CdO/ZnO)- Li2O-AlF3 glasses, Journal of Optoelectronics and Advanced Materials Vol. 10, Iss. 10, pp. 2777-2781 (2008)