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Negative Goos--Hanchen Effect in Thin-Film Fabry--Perot Filter |
| LI Ming-Yu1;LIU Xu1;MA Xin2;LI Yi-Yu1;GU Pei-Fu1 |
| 1State Key Laboratory of Modern Optical Instrumentation, Zhejiang University, Hangzhou 3100272National Center for Nanoscience and Technology, Beijing 100080 |
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| Cite this article: |
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LI Ming-Yu, LIU Xu, MA Xin et al 2007 Chin. Phys. Lett. 24 2091-2093 |
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Abstract We investigate the Goos--Hanchen effect of a Gaussian light beam reflected by the thin-film Fabry--Perot filter. It is shown that the Goos--Hanchen shift can be either negative or positive. The Gaussian-beam analysis and stationary phase method are introduced to calculate the lateral shift between the incident beam and the reflected beam at different wavelengths and to analyse the Goos-Hanchen effect in the thin-film Fabry-Perot filter. The effect of the incident beam diameter is also discussed.
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| Keywords:
78.20.-e
42.70.Qs
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Received: 06 February 2007
Published: 25 June 2007
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| PACS: |
78.20.-e
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(Optical properties of bulk materials and thin films)
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42.70.Qs
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(Photonic bandgap materials)
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