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Chin. Opt. Lett.
 Home  List of Issues    Issue 01 , Vol. 04 , 2006    Enhancement of upconversion luminescence due to the formation of nanocrystals in Er3+-doped tellurite glasses

Enhancement of upconversion luminescence due to the formation of nanocrystals in Er3+-doped tellurite glasses
Gang Zhou1;2, Shixun Dai1;3, Chunlei Yu1;2, Junjie Zhang1, Guonian Wang1;2, Lei Wen1, Zhonghong Jiang1
1Laser Glass Laboratory, [Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences], Shanghai 201800
2[Graduate School of the Chinese Academy of Sciences], Beijing 100049
3College of Information Science and Engineering, [Ningbo University], Ningbo 315211

Chin. Opt. Lett., 2006, 04(01): pp.36-38-3

Keywords(OCIS Code): 160.4670  160.5690  300.6280  160.2750  

Optically transparent Er3+-doped tellurite-based nanocrystallized glasses with the composition of 70TeO2-15Li2O-15Nb2O5-0.5Er2O3 (mol) have been prepared by a conventional melting quenching and the subsequent heat treatment processes. The sizes of grown nanocrystals in glass matrix appear to be 35-50 nm from the X-ray diffraction (XRD) measurement. The microhardness measurement shows that the Vickers hardness values of the nanocrystallized tellurite glasses are larger (33%-62%) than those in the base glass. The Raman spectra imply that the maximum phonon energy of the based glass decreases and shifts from 668 to 638 /cm after heat-treatment. Visible upconversion luminescence and infrared luminescence of the base glass and heat-treated glasses under 980-nm laser diode (LD) excitation are investigated. The 524-, 546- and 656-nm upconversion intensities by 980-nm pumping increase significantly.

Copyright: © 2003-2012 . This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.

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Get Citation: Gang Zhou, Shixun Dai, Chunlei Yu, Junjie Zhang, Guonian Wang, Lei Wen, Zhonghong Jiang, "Enhancement of upconversion luminescence due to the formation of nanocrystals in Er3+-doped tellurite glasses," Chin. Opt. Lett. 04(01), 36-38-3(2006)

Note: This work was supported by the National Natural Science Foundation of China (No. 60207006) and Shanghai "Qimingxing" Project (No. 04QMX1448). G. Zhou's e-mail address is hbhmzg@163.com.


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