Asymmetric light transmission based on a 1D triangular metal grating

doi:10.1364/josab.387975

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	Asymmetric light transmission based on a 1D triangular metal grating
	Y. Lin
刊名	Journal of the Optical Society of America B-Optical Physics
	2020
卷号	37 期号:5 页码:1428-1433
ISSN号	0740-3224
DOI	10.1364/josab.387975
英文摘要	Here, we present a 1D isosceles triangle silver grating on the dielectric substrate. The grating performs asymmetric light transmission (ALT) characteristics for the light with both transverse magnetic (TM) and transverse electric (TE) polarization states over a waveband in the vicinity of 1.55 mu m. By checking the efficiency of each diffraction order and the distribution of the electromagnetic field, we found that the ALT characteristics originate from the high transmitted or reflected diffraction channels excited by forward and backward direction incidence. The grating shows the ALT characteristics in a waveband where incident wavelengths are less and more than the period, so that the grating may be a candidate for the wideband ALT devices. It is worth stressing that the contrast ratio (CR) at a specific wavelength can exceed more than 29 dB (the incident angle is 5.6897 degrees; the incident wavelength is 1.7759 mu m) under oblique incidence. (C) 2020 Optical Society of America
URL标识	查看原文
语种	英语
内容类型	期刊论文
源URL	[http://ir.ciomp.ac.cn/handle/181722/64321]
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	Y. Lin. Asymmetric light transmission based on a 1D triangular metal grating[J]. Journal of the Optical Society of America B-Optical Physics,2020,37(5):1428-1433.
APA	Y. Lin.(2020).Asymmetric light transmission based on a 1D triangular metal grating.Journal of the Optical Society of America B-Optical Physics,37(5),1428-1433.
MLA	Y. Lin."Asymmetric light transmission based on a 1D triangular metal grating".Journal of the Optical Society of America B-Optical Physics 37.5(2020):1428-1433.