Tellurite And Fluorotellurite Glasses For Active And Passive

6. Optical properties; MDO 177
Fig. (6.4): Variation in potential energy with distance between two nuclei (H and Br),
using the anharmonic oscillator model [2].
Allowed energy levels are given by equation (6.16) [2].
where
1
2
1
2
2
E υ = ωe
( υ + ) − ωe
xe
( υ + )
(6.16)
ω
100c
ω e = and has units cm -1 and xe is a small anharmonic correction. e
ω and xe
are experimentally determined constants, from which Ed and κ can be derived [2]. The