Please use this identifier to cite or link to this item:
Title: ?-phase modulated monolayer supercritical lens
Authors: Qin, Fei
Liu, Boqing
Zhu, Linwei
Lei, Jian
Fang, Wei
Hu, Dejiao
Zhu, Yi
Ma, Wendi
Wang, Bowen
Shi, Tan
Cao, Yaoyu
Guan, Bai-Ou
Qiu, Cheng-Wei 
Lu, Yuerui
Li, Xiangping
Issue Date: 4-Jan-2021
Publisher: Nature Research
Citation: Qin, Fei, Liu, Boqing, Zhu, Linwei, Lei, Jian, Fang, Wei, Hu, Dejiao, Zhu, Yi, Ma, Wendi, Wang, Bowen, Shi, Tan, Cao, Yaoyu, Guan, Bai-Ou, Qiu, Cheng-Wei, Lu, Yuerui, Li, Xiangping (2021-01-04). ?-phase modulated monolayer supercritical lens. Nature Communications 12 (1) : 32. ScholarBank@NUS Repository.
Rights: Attribution 4.0 International
Abstract: The emerging monolayer transition metal dichalcogenides have provided an unprecedented material platform for miniaturized opto-electronic devices with integrated functionalities. Although excitonic light–matter interactions associated with their direct bandgaps have received tremendous research efforts, wavefront engineering is less appreciated due to the suppressed phase accumulation effects resulting from the vanishingly small thicknesses. By introducing loss-assisted singular phase behaviour near the critical coupling point, we demonstrate that integration of monolayer MoS2 on a planar ZnO/Si substrate, approaching the physical thickness limit of the material, enables a ? phase jump. Moreover, highly dispersive extinctions of MoS2 further empowers broadband phase regulation and enables binary phase-modulated supercritical lenses manifesting constant sub-diffraction-limited focal spots of 0.7 Airy units (AU) from the blue to yellow wavelength range. Our demonstrations downscaling optical elements to atomic thicknesses open new routes for ultra-compact opto-electronic systems harnessing two-dimensional semiconductor platforms with integrated functionalities. © 2021, The Author(s).
Source Title: Nature Communications
ISSN: 2041-1723
DOI: 10.1038/s41467-020-20278-x
Rights: Attribution 4.0 International
Appears in Collections:Elements
Staff Publications

Show full item record
Files in This Item:
File Description SizeFormatAccess SettingsVersion 
10_1038_s41467-020-20278-x.pdf2.14 MBAdobe PDF



Google ScholarTM



This item is licensed under a Creative Commons License Creative Commons