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Spectrum apodization of a time-dependent Gaussian pulse incident on the apodized circular aperture in far-field |
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| Authors: | Pin Han Hone-Ene Hwang Yee-Mou Kao |
| Affiliation: | aCenter of Nanoscience and Nanotechnology, Institute of Precision Engineering, National Chung Hsing University, 250, Kuo Kuang Road, Taichung 402, Taiwan, ROC;bDepartment of Electronic Engineering, Chung Chou Institute of Technology, 6, Lane 2, Section 3, Sunchao Road, Yuanlin 510, Changhua, Taiwan, ROC;cPhysics Division, National Center for Theoretical Sciences, Hsinchu 300, Taiwan, ROC |
| Abstract: | The diffraction spectral intensity characteristics of a time-dependent Gaussian pulse from an apodized circular aperture in the far field are studied both theoretically and numerically. It is shown that the apodization of the diffracted Gaussian pulse spectrum can be found. Also the red or blue shift of the spectral intensity maximum of the incident pulse is presented. |
| Keywords: | Gaussian pulse Far-field (Fraunhofer) diffraction Spectral intensity Fresnel diffraction integral Apodized circular aperture Red shift Blue shift |
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