Measurement of energy transfer upconversion in Nd:YAG via the z-scan technique

被引：1
|
作者：
Yan, R. P. [1 ]
Yoon, S. J. [1 ]
Beecher, S. J. [1 ]
Mackenzie, J. I. [1 ]
机构：
[1] Univ Southampton, Optoelect Res Ctr, Southampton SO17 1BJ, Hants, England
来源：
LASER SOURCES AND APPLICATIONS II | 2014年 / 9135卷
关键词：
Absorption coefficient; Upconversion; Nd:YAG; PUMPED ND-YAG; WAVE;
D O I：
10.1117/12.2054307
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
We present the determination of the energy transfer upconversion (ETU) coefficient for Nd:YAG via the z-scan technique, achieved by studying the irradiance dependence of the transmission of a pump laser tuned to the absorption peak around 808 nm. A spatially dependent two-level rate equation model has been utilized to predict the transmission dependence as a function of the sample's position in the z-scan experiment, with the ETU coefficient the only free parameter. Comparing experimental results with the model's output, the ETU coefficient for 1 at.% Nd:YAG is determined to be 5.1 +/- 0.4 x 10(-17) cm(3)/s.
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页数：6
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