Physical and luminescence studies of Er3+-doped into borate glass for IR lighting application
Nawarut Jarucha, Nuanthip Wantana, Yotsakit Ruangtaweep, Jakrapong Kaewkhao
Physics Program, Faculty of Science and Technology, Nakhon Pathom Rajabhat University, Nakhon Pathom 73000, Thailand
Center of Excellence in Glass Technology and Materials Science (CEGM), Nakhon Pathom Rajabhat University, Nakhon Pathom 73000, Thailand
Abstract
The gadolinium tungsten borate glasses doped with Er3+ were prepared by melt quenching technique for study in physical, absorption and luminescence properties by composition (30-x) B2O3 - 27.5 Gd2O3 - 42.5 WO3 - x Er2O3, where x = 0.1, 0.5, 1.0 and 2.0 mol%. The results show that doping Er2O3 in high concentration make the glass density and molar volume tend to increase. The absorption spectra indicate the photon absorbing of Er3+ in visible light and near infrared region. The luminescence of an erbium doped glass were investigated at room temperature. In addition, mechanisms of the luminescence by multiphoton absorption and energy transfer processes are discussed based on the energy-level diagram of Er3+ and luminescence spectra. These results benefit for efficient short and conventional-length optical amplifiers and tunable lasers.
Keywords: Borate glass, Erbium, Luminescence
Topic: Optical, luminescence, Electronic Materials and applications