Intense visible upconversion and energy transfer in Ho3+/Yb3+ codoped tellurite glasses for potential fiber laser
New Ho3+/Yb3+ codoped tellurite glass was prepared using melt-quenching method. The thermal stability of glass sample increased with rare-earth doped concentration. Codoping with Yb3+ led to intensive green and red upconversion of Ho3+ owing to ET. ET mechanism was investigated by calculating micro-coefficient and phonon contribution. The prepared Ho3+/Yb3+ codoped tellurite glass is suitable for visible-band fiber laser.
energy transfer ho3+/yb3+ codoping tellurite glass upconversion emission