气候变化领域集成服务门户(CCPortal): Photocurrent detection of the orbital angular momentum of light

CCPortal

DOI	10.1126/science.aba9192
	Photocurrent detection of the orbital angular momentum of light
	Ji Z.; Liu W.; Krylyuk S.; Fan X.; Zhang Z.; Pan A.; Feng L.; Davydov A.; Agarwal R.
发表日期	2020
ISSN	0036-8075
起始页码	763
结束页码	767
卷号	368 期号:6492
英文摘要	Applications that use the orbital angular momentum (OAM) of light show promise for increasing the bandwidth of optical communication networks. However, direct photocurrent detection of different OAM modes has not yet been demonstrated. Most studies of current responses to electromagnetic fields have focused on optical intensity–related effects, but phase information has been lost. In this study, we designed a photodetector based on tungsten ditelluride (WTe2) with carefully fabricated electrode geometries to facilitate direct characterization of the topological charge of OAM of light. This orbital photogalvanic effect, driven by the helical phase gradient, is distinguished by a current winding around the optical beam axis with a magnitude proportional to its quantized OAM mode number. Our study provides a route to develop on-chip detection of optical OAM modes, which can enable the development of next-generation photonic circuits. Copyright © 2020 The Authors,
关键词	angular momentum communication network detection method electrode light effect
语种	英语
来源机构	Science
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/133504
推荐引用方式 GB/T 7714	Ji Z.,Liu W.,Krylyuk S.,et al. Photocurrent detection of the orbital angular momentum of light[J]. Science,2020,368(6492).
APA	Ji Z..,Liu W..,Krylyuk S..,Fan X..,Zhang Z..,...&Agarwal R..(2020).Photocurrent detection of the orbital angular momentum of light.,368(6492).
MLA	Ji Z.,et al."Photocurrent detection of the orbital angular momentum of light".368.6492(2020).