Surface thermal lens technique with an obliquely-incident probe beam

被引:0
|
作者
B. Li
X. Chen
机构
[1] Institute of Optics and Electronics,
[2] Chinese Academy of Sciences,undefined
关键词
Incident Angle; EUROPEAN Physical Journal Special Topic; Probe Beam; Grazing Angle; Detection Distance;
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学科分类号
摘要
Surface thermal lens (STL) signal produced by a cw modulated top-hat beam excitation is detected by an obliquely-incident probe beam. The dependence of the STL amplitude on the incident angle θ of the probe beam is experimentally investigated. The STL amplitude as a function of the detection distance is measured at different angles of incidence. The results show that the maximum STL amplitude and the optimum detection distance, where the maximum STL amplitude is obtained, decrease by cosθ as the incident angle increases. These experimental dependences are well explained by a simple theoretical model.
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页码:423 / 425
页数:2
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