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[1] Zhang Chunwei, Zhao Weiwei, Bi Kedong, Yong GuoqingGao Xuesong, et al. Improvement of pump-probe optical measurement techniqueusing double moving stages [J]. Journal of Southeast University (English Edition), 2013, 29 (4): 414-418. [doi:10.3969/j.issn.1003-7985.2013.04.011]
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Improvement of pump-probe optical measurement techniqueusing double moving stages()
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Journal of Southeast University (English Edition)[ISSN:1003-7985/CN:32-1325/N]

Volumn:
29
Issue:
2013 4
Page:
414-418
Research Field:
Energy and Power Engineering
Publishing date:
2013-12-20

Info

Title:
Improvement of pump-probe optical measurement techniqueusing double moving stages
Author(s):
Zhang Chunwei;  Zhao Weiwei;  Bi Kedong;  Yong GuoqingGao Xuesong;  Wang Jianli;  Chen Yunfei
Jiangsu Key Laboratory for Design and Manufacture of Micro-Nano Biomedical Instruments, Southeast University, Nanjing 211189, China
Keywords:
femtosecond laser;  transient thermoreflectance;  double moving stages;  interfacial thermal conductance
PACS:
TK39
DOI:
10.3969/j.issn.1003-7985.2013.04.011
Abstract:
In order to improve the measurement precision and increase the reliability of the femtosecond laser transient thermoreflectance system, the relative optical path difference between pump and probe beams is prolonged, which can improve the fitting accuracy of the experimental data to the theoretical model. A modified experimental setup is devised with the pump path intercalated a moving stage identical to the one in the probe path, which extends the optical path difference of the probe beam relative to the pump beam from 4 to 8 ns. The measured results indicate that the uncertainty from the misalignment and divergence of both beams can be ignored when the last 4 ns experimental data are connected with those of the first 4 ns smoothly. The as-obtained thermal conductance of Al/Si and Cr/Si interfaces agrees well with the reported experimental values, which verifies the reliability of this modified version of this measurement.

References:

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Memo

Memo:
Biographies: Zhang Chunwei(1975—), male, graduate; Chen Yunfei(corresponding author), male, doctor, professor, yunfeichen@seu.edu.cn.
Foundation items: The National Basic Research Program of China(973 Program)(No.2011CB707605), the National Natural Science Foundation of China(No.51205061, 50925519, 51106029), the Natural Science Foundation of Jiangsu Province(No.BK2012340), the Ph.D. Programs Foundation of Ministry of Education of China(No.20110092120006).
Citation: Zhang Chunwei, Zhao Weiwei, Bi Kedong, et al. Improvement of pump-probe optical measurement technique using double moving stages[J].Journal of Southeast University(English Edition), 2013, 29(4):414-418.[doi:10.3969/j.issn.1003-7985.2013.04.011]
Last Update: 2013-12-20