## Talbot effect of a grating with different kinds of flaws

JOSA A, Vol. 22, Issue 12, pp. 2662-2667 (2005)

http://dx.doi.org/10.1364/JOSAA.22.002662

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### Abstract

The Talbot effect of a grating with different kinds of 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 will also be distorted. Furthermore, we evaluate high-density gratings by detecting the near-field distribution with the scanning near-field optical microscopy technique. Experimental results are also given.

© 2005 Optical Society of America

**OCIS Codes**

(050.1950) Diffraction and gratings : Diffraction gratings

(070.6760) Fourier optics and signal processing : Talbot and self-imaging effects

(260.2110) Physical optics : Electromagnetic optics

**ToC Category:**

Fourier Optics and Optical Signal Processing

**Citation**

Yunqing Lu, Changhe Zhou, and Hongxin Luo, "Talbot effect of a grating with different kinds of flaws," J. Opt. Soc. Am. A **22**, 2662-2667 (2005)

http://www.opticsinfobase.org/josaa/abstract.cfm?URI=josaa-22-12-2662

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