By Topic

Intense Near-UV Upconversion Luminescence in {\rm Tm}^{3+}/{\rm Yb}^{3+} Co-Doped Low-Phonon-Energy Lithium Gallogermanate Oxide Glass

Sign In

Cookies must be enabled to login.After enabling cookies , please use refresh or reload or ctrl+f5 on the browser for the login options.

Formats Non-Member Member
$31 $13
Learn how you can qualify for the best price for this item!
Become an IEEE Member or Subscribe to
IEEE Xplore for exclusive pricing!
close button

puzzle piece

IEEE membership options for an individual and IEEE Xplore subscriptions for an organization offer the most affordable access to essential journal articles, conference papers, standards, eBooks, and eLearning courses.

Learn more about:

IEEE membership

IEEE Xplore subscriptions

4 Author(s)
Bo Zhou ; Dept. of Electr. Eng., Hong Kong Polytech. Univ., Kowloon, China ; Lili Tao ; Wei Jin ; Tsang, Y.H.

Intense near-ultraviolet (UV) upconversion emission of 365 nm has been obtained in Tm3+/Yb3+ co-doped lithium gallogermanate oxide glass upon a 980-nm laser diode excitation. This near-UV emission originates from the Tm3+:1D23H6 transition. The cross relaxation process [1G4,3H4]→[3F4,1D2] is shown to play a critical role in population of the emitting level Tm3+1D2. The low phonon energy (~ 825 cm-1) and high transparency at near-UV of the glass matrix also contribute to this emission. The emission cross section is calculated to be 6.46×10-21cm2, which is larger than Tm3+1.47 and 1.80-μm transitions. The results indicate that, other than single crystal and nano-glass-ceramic, this system is a promising alternative for development of near-UV lasers.

Published in:

Photonics Technology Letters, IEEE  (Volume:24 ,  Issue: 19 )