Chinese Optics Letters, 2005, 3 (0s): 358, Published Online: Mar. 5, 2007
FDTD analysis of Talbot effect of a high density grating
070.6760 Talbot effect 110.6760 Talbot effect 050.1950 Diffraction gratings 260.2110 Electromagnetic theory
Abstract
Talbot effect of a grating with different flaws is analyzed with the finite-difference time-domain (FDTD) method. The FDTD method can show the exact near-field distribution of different flaws in a high-density grating, which is impossible to obtain with the conventional Fourier transform method. The numerical results indicate that if a grating is perfect, its Talbot imaging should also be perfect; if the grating is distorted, its Talbot imaging would also be distorted. Furthermore, we can evaluate high density gratings by detecting the near-field distribution.
Yunqing Lu, Changhe Zhou, Hongxin Luo. FDTD analysis of Talbot effect of a high density grating[J]. Chinese Optics Letters, 2005, 3(0s): 358.