FUNDAMENTAL AREAS OF PHENOMENOLOGY(INCLUDING APPLICATIONS) |
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The Axial Spatial Evolution of Optical Field near the Talbot Plane of a Grating |
LU Yun-Qing, LI Pei-Li, ZHENG Jia-Jin |
College of Optoelectronic Engineering, Nanjing University of Posts and Telecommunications, Nanjing 210003 |
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Cite this article: |
LU Yun-Qing, LI Pei-Li, ZHENG Jia-Jin 2010 Chin. Phys. Lett. 27 094201 |
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Abstract The diffraction field distribution of a high density grating with a period of 2.5λ is analyzed with the finite-difference time-domain (FDTD) method. The numerical results show the axial spatial evolution of the optical field near the 1/2 Talbot plane of the grating, which is verified by experiment with the scanning near-field optical microscopy (SNOM) technique. It should be helpful for understanding more clearly the diffraction behavior of a high density grating in micro- and nano-optics and be beneficial for applications of the Talbot effect, such as the near-field photolithography.
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Keywords:
42.79.Dj
42.25.Fx
78.20.-e
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Received: 29 March 2010
Published: 25 August 2010
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PACS: |
42.79.Dj
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(Gratings)
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42.25.Fx
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(Diffraction and scattering)
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78.20.-e
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(Optical properties of bulk materials and thin films)
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