Enhanced Directional Emission from Monolayer WSe2 Integrated onto a Multiresonant Silicon-Based Photonic Structure

被引:48
作者
Chen, Haitao [1 ]
Nanz, Stefan [3 ]
Abass, Aimi [4 ]
Yan, Jingshi [1 ]
Gao, Tingge [1 ]
Choi, Duk-Yong [2 ]
Kivshar, Yuri S. [1 ]
Rockstuhl, Carsten [3 ,4 ]
Neshev, Dragomir N. [1 ]
机构
[1] Australian Natl Univ, Res Sch Phys & Engn, Nonlinear Phys Ctr, Canberra, ACT 2601, Australia
[2] Australian Natl Univ, Res Sch Phys & Engn, Laser Phys Ctr, Canberra, ACT 2601, Australia
[3] KIT, Inst Theoret Solid State Phys, Wolfgang Gaede Str 1, D-76131 Karlsruhe, Germany
[4] KIT, Inst Nanotechnol, POB 3640, D-76021 Karlsruhe, Germany
基金
澳大利亚研究理事会;
关键词
2D material; WSe2; waveguide; grating; photoluminescence; directional emission; VALLEY POLARIZATION; LIGHT-EMISSION; MOS2; PHOTOLUMINESCENCE; OPTOELECTRONICS; EMITTERS; LASERS;
D O I
10.1021/acsphotonics.7b00550
中图分类号
TB3 [工程材料学];
学科分类号
0805 ; 080502 ;
摘要
Two-dimensional transition-metal dichalcogenides such as WSe2 show great promise as versatile atomic-scale light sources for on-chip applications due to their advanced optoelectronic properties and compatibility with a silicon photonics platform. However, the sub-nanometer thickness of such active materials limits their emission efficiency. Hence, new approaches to simultaneously enhance the emission and control its directionality are required. Here, we demonstrate enhanced and directional emission from a WSe2 monolayer integrated onto a silicon photonic structure. This is achieved by coupling of the WSe2 layer to a multiresonant silicon grating-waveguide structure. The interaction with the multiple resonant modes supported by the structure provides simultaneous excitation and emission enhancement, while the dispersion of the modes further routes the emission into specified directions. In addition, our hybrid structure offers the opportunity for ultrafast emission modulation, owing to the reduced emission lifetime of WSe2. Such a silicon-based hybrid platform is fully scalable and promising as efficient chip-integrated and spatially multiplexed light sources.
引用
收藏
页码:3031 / 3038
页数:8
相关论文
共 47 条
[1]   Leveraging Nanocavity Harmonics for Control of Optical Processes in 2D Semiconductors [J].
Akselrod, Gleb M. ;
Ming, Tian ;
Argyropoulos, Christos ;
Hoang, Thang B. ;
Lin, Yuxuan ;
Ling, Xi ;
Smith, David R. ;
Kong, Jing ;
Mikkelsen, Maiken H. .
NANO LETTERS, 2015, 15 (05) :3578-3584
[2]   Enhancement and quenching of single-molecule fluorescence [J].
Anger, P ;
Bharadwaj, P ;
Novotny, L .
PHYSICAL REVIEW LETTERS, 2006, 96 (11)
[3]   Enhanced Light Emission from Large-Area Monolayer MoS2 Using Plasmonic Nanodisc Arrays [J].
Butun, Serkan ;
Tongay, Sefaattin ;
Aydin, Koray .
NANO LETTERS, 2015, 15 (04) :2700-2704
[4]  
Chakraborty C, 2015, NAT NANOTECHNOL, V10, P507, DOI [10.1038/nnano.2015.79, 10.1038/NNANO.2015.79]
[5]   Enhanced second-harmonic generation from two-dimensional MoSe2 on a silicon waveguide [J].
Chen, Haitao ;
Corboliou, Vincent ;
Solntsev, Alexander S. ;
Choi, Duk-Yong ;
Vincenti, Maria A. ;
de Ceglia, Domenico ;
de Angelis, Costantino ;
Lu, Yuerui ;
Neshev, Dragomir N. .
LIGHT-SCIENCE & APPLICATIONS, 2017, 6 :e17060-e17060
[6]   Manipulation of photoluminescence of two-dimensional MoSe2 by gold nanoantennas [J].
Chen, Haitao ;
Yang, Jiong ;
Rusak, Evgenia ;
Straubel, Jakob ;
Guo, Rui ;
Myint, Ye Win ;
Pei, Jiajie ;
Decker, Manuel ;
Staude, Isabelle ;
Rockstuhl, Carsten ;
Lu, Yuerui ;
Kivshar, Yuri S. ;
Neshev, Dragomir .
SCIENTIFIC REPORTS, 2016, 6
[7]   Negligible nonlinear absorption in hydrogenated amorphous silicon at 1.55μm for ultra-fast nonlinear signal processing [J].
Gai, Xin ;
Choi, Duk-Yong ;
Luther-Davies, Barry .
OPTICS EXPRESS, 2014, 22 (08) :9948-9958
[8]   Broadband Enhancement of Spontaneous Emission in Two-Dimensional Semiconductors Using Photonic Hypercrystals [J].
Galfsky, Tal ;
Sun, Zheng ;
Considine, Christopher R. ;
Chou, Cheng-Tse ;
Ko, Wei-Chun ;
Lee, Yi-Hsien ;
Narimanov, Evgenii E. ;
Menon, Vinod M. .
NANO LETTERS, 2016, 16 (08) :4940-4945
[9]   Cascaded emission of single photons from the biexciton in monolayered WSe2 [J].
He, Yu-Ming ;
Iff, Oliver ;
Lundt, Nils ;
Baumann, Vasilij ;
Davanco, Marcelo ;
Srinivasan, Kartik ;
Hoefling, Sven ;
Schneider, Christian .
NATURE COMMUNICATIONS, 2016, 7
[10]  
He YM, 2015, NAT NANOTECHNOL, V10, P497, DOI [10.1038/nnano.2015.75, 10.1038/NNANO.2015.75]