Chromatic analysis of harmonic Fresnel lenses by FDTD and angular spectrum methods
文献类型：期刊论文
| 作者 | Yang, Jianming; Twardowski, Patrice; Gerard, Philippe; Yu, Wenhui; Fontaine, Joel |
| 刊名 | Applied Optics
 |
| 出版日期 | 2018 |
| 卷号 | 57期号:19页码:5281-5287 |
| 关键词 | Time domain analysis Angle measurement Diffraction efficiency Efficiency Finite difference time domain method Full width at half maximum Harmonic analysis Optical instrument lenses Refractive index Spectrum analysis |
| ISSN号 | 1559128X |
| DOI | 10.1364/AO.57.005281 |
| 英文摘要 | In this paper, we present a detailed and rigorous study of cylindrical harmonic Fresnel lenses (HFLs) using the finite difference time domain method (FDTD) and angular spectrum method (ASM). The HFL is a kind of diffractive lens that can have maximum diffraction efficiency at several discrete harmonic wavelengths, which is suitable for some broadband applications. Previous studies on HFLs were investigated mainly in the domain of paraxial approximation. By using our proposed calculation method, we have determined the efficiency, focal length, maximum focus intensity, and full width at half maximum (FWHM) of the focal spot for several harmonic numbers and for F -numbers of 0.5, 1, and 3. To compare with the paraxial approximation, we have presented the response to both s-polarized and p-polarized light with constant refractive index and real dispersive material, BK7. Moreover, we have also analyzed the cases with oblique illumination. We have shown that the harmonic wavelengths do not change with F # and that the diffraction efficiency and FWHM of the focus increase as F # increases. New results on harmonic wavelengths shift and oblique angle of incidence response have been detailed. 2018 Optical Society of America. |
| 源URL | [http://ir.ciomp.ac.cn/handle/181722/60928]  |
| 专题 | 中国科学院长春光学精密机械与物理研究所 |
| 推荐引用方式 GB/T 7714 | Yang, Jianming,Twardowski, Patrice,Gerard, Philippe,et al. Chromatic analysis of harmonic Fresnel lenses by FDTD and angular spectrum methods[J]. Applied Optics,2018,57(19):5281-5287. |
| APA | Yang, Jianming,Twardowski, Patrice,Gerard, Philippe,Yu, Wenhui,&Fontaine, Joel.(2018).Chromatic analysis of harmonic Fresnel lenses by FDTD and angular spectrum methods.Applied Optics,57(19),5281-5287. |
| MLA | Yang, Jianming,et al."Chromatic analysis of harmonic Fresnel lenses by FDTD and angular spectrum methods".Applied Optics 57.19(2018):5281-5287. |
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