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题名:
Explicit and approximate theories of photothermal deformation in surface thermal lens technique
作者: Hao, H.1,2; Li, B.1; Chen, X.1
刊名: EUROPEAN PHYSICAL JOURNAL-SPECIAL TOPICS
出版日期: 2008
卷号: 153, 期号:1, 页码:419-421
学科分类: 光学薄膜技术
文章类型: Article
中文摘要: An explicit thermoelastic model is developed to describe the photothermal deformation of a coated sample excited by a cw modulated laser beam with a top-hat profile. The surface displacement obtained with this explicit model is compared to that obtained by an approximate model developed by Reichling and Gronbeck (J. Appl. Phys. 75, 1914 (1994)). Both thermoelastic models are then applied in a Fresnel diffraction based surface thermal lens (STL) theory. Numerical calculations are performed to investigate the differences between the explicit and approximate models in both surface displacement and STL signal. The simulation results show that the approximate model over-estimates the surface displacement and the corresponding STL signal amplitude. A decrease in the thermal diffusion length reduces the differences between the results obtained with the two thermoelastic models.
英文摘要: An explicit thermoelastic model is developed to describe the photothermal deformation of a coated sample excited by a cw modulated laser beam with a top-hat profile. The surface displacement obtained with this explicit model is compared to that obtained by an approximate model developed by Reichling and Gronbeck (J. Appl. Phys. 75, 1914 (1994)). Both thermoelastic models are then applied in a Fresnel diffraction based surface thermal lens (STL) theory. Numerical calculations are performed to investigate the differences between the explicit and approximate models in both surface displacement and STL signal. The simulation results show that the approximate model over-estimates the surface displacement and the corresponding STL signal amplitude. A decrease in the thermal diffusion length reduces the differences between the results obtained with the two thermoelastic models.
WOS标题词: Science & Technology ; Physical Sciences
类目[WOS]: Physics, Multidisciplinary
研究领域[WOS]: Physics
收录类别: ISTP ; SCI
语种: 英语
WOS记录号: WOS:000254041300094
ISSN号: 1951-6355
Citation statistics:
内容类型: 期刊论文
URI标识: http://ir.ioe.ac.cn/handle/181551/2066
Appears in Collections:薄膜光学技术研究室(十一室)_期刊论文

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作者单位: 1.Chinese Acad Sci, Inst Opt & Elect, Chengdu 610209, Sichuan, Peoples R China
2.Chinese Acad Sci, Grad Sch, Beijing 100039, Peoples R China

Recommended Citation:
Hao, H.,Li, B.,Chen, X.. Explicit and approximate theories of photothermal deformation in surface thermal lens technique[J]. EUROPEAN PHYSICAL JOURNAL-SPECIAL TOPICS,2008,153(1):419-421.
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