An analysis of the spectroscopic properties of trivalent erbium doped Yb3Al5O12 (YbAG) garnet is presented. In this
work, the authors focused attention on the up-conversion processes leading to the short wavelength emission from the
2G9/2, 4S3/2 and 4F9/2 excited states of Er3+ ions. The strong interaction between Yb3+ and Er3+ ions, responsible for the
infra-red (940 nm) induced visible emissions in the 415, 550 and 670 nm range, were observed.
|