Effect of Excitation Migration and Upconversion in Highly Erbium-doped Glass Micro-sphere Lasers

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Field Value
 
Title Effect of Excitation Migration and Upconversion in Highly Erbium-doped Glass Micro-sphere Lasers
 
Creator Hoi, Pham Van
Huy, Bui
Chi, Do Thuy
 
Subject Highly Er-doped glass, excitation migration and upconversion, micro-cavity laser

 
Description Excitation migration and upconversion process in the Erbium-doped silica-alumina glass microsphere lasers with concentrations of 2500-4000~ppm were investigated in detail. The experiment shows that under 976~nm excitation, the intense of up-conversion emission at 523, 546 and 657~nm, corresponding to the transitions $^{2}$H$_{11 / 2 } \to ^{4}$I$_{15 / }$, $^{4}$S$_{3 / 2} \to ^{4}$I$_{15 / 2}$, and $^{4}$F$_{9 / 2} \to ^{4}$I$_{15 / 2}$, respectively, $^{ }$depends on the erbium content, migration of excitation and pump power. The excitation migration has strongly influenced on the threshold and Red shift of lasing wavelength and migration-assisted up-conversion process leads to degraded amplification performance of microsphere lasers made by silica-alumina glasses with different contents of Er-ions.
 
Publisher Publishing House for Science and Technology, Vietnam Academy of Science and Technology
 
Contributor
 
Date 2012-08-15
 
Type info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion


 
Format application/pdf
 
Identifier http://vjs.ac.vn/index.php/cip/article/view/2168
10.15625/0868-3166/20/2/2168
 
Source Communications in Physics; Vol 20, No 2 (2010); 143
Communications in Physics; Vol 20, No 2 (2010); 143
0868-3166
0868-3166
 
Language eng
 
Relation http://vjs.ac.vn/index.php/cip/article/view/2168/2758
 

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