Title :
Internal fluorescence induced refreshment of thermally fixed photorefractive grating in Ti:Fe:Er:LiNbO3 for stable laser emission
Author :
Das, B.K. ; Ducrolf, V. ; Sohler, W.
Author_Institution :
Dept. of Phys., Lehigh Univ., Bethlehem, PA, USA
fDate :
5/26/2005 12:00:00 AM
Abstract :
It is shown that thermally fixed photorefractive gratings fabricated for waveguide lasers in Ti:Fe:Er:LiNbO3 can be refreshed and stabilised by the upconverted green fluorescence from Er3+ ions. Spectral properties of such refreshed gratings are found to be superior and are excellent for a single-frequency laser emission.
Keywords :
erbium; fluorescence; iron; lithium compounds; photorefractive materials; titanium; waveguide lasers; Er3+ ions; LiNbO3:Ti,Fe,Er; internal fluorescence; laser emission stability; photorefractive grating; single-frequency laser emission; spectral properties; thermal fixing; upconverted green fluorescence; waveguide lasers;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:20050437