Optical characterisation of Er~(3+)-doped oxyfluoride glasses and nano-glass-ceramics

摘要

We present the optical properties such as the linear refractive index (n), the absorption coefficient (α), the energy band gap (E_g) and the nonlinear refractive index (n_2) measured by spectroscopy and degenerate four wave mixing methods for Er~(3+)-doped oxyfluoride glasses and nano-glass-ceramics. The n_2 of the Er~(3+)-doped oxyfluoride nano-glass-ceramic is almost twice that of the Er~(3+) -doped parent oxyfluoride glass and undoped oxyfluoride glass. The n_2 values of the Er~(3+)-doped oxyfluoride glass and non-Er~(3+)-doped oxyfluoride glass are almost the same.