Analysis of Optical and Near-Infrared Luminescence of Er<sup>3+</sup> and Er<sup>3+/</sup>Yb<sup>3+</sup> Co-Doped Heavy Metal Borate Glasses for Optical Amplifier Applications
Vinod Hegde,
G. Devarajulu,
A. G. Pramod,
Sangeeta B. Kolavekar,
Dalal Abdullah Aloraini,
Aljawhara H. Almuqrin,
M. I. Sayyed,
G. Jagannath
Affiliations
Vinod Hegde
Department of Science and Humanities, PES University, BSK 3rd Stage, Bangalore 560085, India
G. Devarajulu
Department of Physics, Sri Venkateswara University, Tirupati 517502, India
A. G. Pramod
Department of Physics, Bangalore University, Bengaluru 560056, India
Sangeeta B. Kolavekar
Department of Physics, School of Advanced Sciences, KLE Technological University, Hubbali 580031, India
Dalal Abdullah Aloraini
Department of Physics, College of Science, Princess Nourah Bint Abdulrahman University, P.O. Box 84428, Riyadh 11671, Saudi Arabia
Aljawhara H. Almuqrin
Department of Physics, College of Science, Princess Nourah Bint Abdulrahman University, P.O. Box 84428, Riyadh 11671, Saudi Arabia
M. I. Sayyed
Department of Physics, Faculty of Science, Isra University, Amman P.O. Box 33, Jordan
G. Jagannath
Department of Post—Graduate Studies and Research in Physics, National College, Jayanagar, Bangalore 560070, India
For the near-infrared emission, Er3+ and Er3+/Yb3+ co-activated borate based glass hosts were synthesized by the method of melting andquenching. The emission intensity was maximum for 0.5 mol% Er3+ singly activated glass in the near-infrared (NIR) region covering the telecommunication window. The 2 mol% of Yb3+ co-doping enhanced the emission gain cross-section of the glass by two times contrast to 0.5 mol% Er3+ loaded glass. This enhancement shifted to lower spectral regions when P increased from 0 to 1. The effect of Yb3+ loading on the gain cross-section of the Er3+ co-activated glasses was analyzed using the McCumber theory. The results showed that the 0.5Er2Yb glass has a flat gain in the range of 1460–1640 nm, this suggest a lower pump threshold is enough to perform the laser functioning of a 1530 nm band and optical window of telecommunication applications.
