Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
851706 | Optik - International Journal for Light and Electron Optics | 2011 | 5 Pages |
Abstract
The Talbot self-imaging of high-density gratings with different period at half Talbot distance for different polarization is analyzed with the finite-difference time-domain (FDTD) method. The numerical results indicate that the Talbot self-imaging of high-density gratings is obviously different for different polarization when the period d of the grating between 2λ and 3λ, which is verified through experimental results with the scanning near-field optical microscopy (SNOM) technique. Furthermore, the Fourier spectrum (far field) generated by the gratings is also given with the rigorous coupled-wave method, which is in agreement with the near field.
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Authors
Yunqing Lu, Jiajin Zheng, Peili Li,