Cherenkov terahertz radiation from Dirac semimetals surface plasmon polaritons excited by an electron beam

doi:10.1088/1674-1056/ab6840

中国物理B ›› 2020, Vol. 29 ›› Issue (3): 34101-034101.doi: 10.1088/1674-1056/ab6840

• ELECTROMAGNETISM, OPTICS, ACOUSTICS, HEAT TRANSFER, CLASSICAL MECHANICS, AND FLUID DYNAMICS • 上一篇下一篇

Cherenkov terahertz radiation from Dirac semimetals surface plasmon polaritons excited by an electron beam

Tao Zhao(赵陶), Zhenhua Wu(吴振华)

Terahertz Research Center, School of Electronic Science and Engineering, University of Electronic Science and Technology of China, Chengdu 610054, China

收稿日期:2019-10-28 修回日期:2019-12-09 出版日期:2020-03-05 发布日期:2020-03-05
通讯作者: Zhenhua Wu E-mail:wuzhenhua@uestc.edu.cn
基金资助:
Project supported by the National Key Research and Development Program of China (Grant No. 2017YFA0701000), the National Key Scientific Instrument and Equipment Development of China (Grant No. 2018YFF01013001), and the National Natural Science Foundation of China (Grant Nos. 61701084 and 61505022).

Cherenkov terahertz radiation from Dirac semimetals surface plasmon polaritons excited by an electron beam

Tao Zhao(赵陶), Zhenhua Wu(吴振华)

Terahertz Research Center, School of Electronic Science and Engineering, University of Electronic Science and Technology of China, Chengdu 610054, China

Received:2019-10-28 Revised:2019-12-09 Online:2020-03-05 Published:2020-03-05
Contact: Zhenhua Wu E-mail:wuzhenhua@uestc.edu.cn
Supported by:
Project supported by the National Key Research and Development Program of China (Grant No. 2017YFA0701000), the National Key Scientific Instrument and Equipment Development of China (Grant No. 2018YFF01013001), and the National Natural Science Foundation of China (Grant Nos. 61701084 and 61505022).

摘要/Abstract

摘要： We demonstrate a physical mechanism for terahertz (THz) generation from surface plasmon polaritons (SPPs). In a structure with a bulk Dirac semimetals (BDSs) film deposited on a dielectric substrate, the energy of the asymmetric SPP mode can be significantly enhanced to cross the light line of the substrate due to the SPP-coupling between the interfaces of the film. Therefore, the SPPs can be immediately transformed into Cherenkov radiation without removing the wavevector mismatch. Additionally, the symmetric SPP mode can also be dramatically lifted to cross the substrate light line when a buffer layer with low permittivity relative to the substrate is introduced. In this case, dual-frequency THz radiation from the two SPP modes can be generated simultaneously. The radiation intensity is significantly enhanced by over two orders due to the field enhancement of the SPPs. The radiation frequency can be tuned in the THz frequency regime by adjusting the beam energy and the chemical potential of the BDSs. Our results could find potential applications in developing room temperature, tunable, coherent, and intense THz radiation sources to cover the entire THz band.

关键词: terahertz radiation sources, surface plasmon polaritons, Cherenkov radiation

Abstract: We demonstrate a physical mechanism for terahertz (THz) generation from surface plasmon polaritons (SPPs). In a structure with a bulk Dirac semimetals (BDSs) film deposited on a dielectric substrate, the energy of the asymmetric SPP mode can be significantly enhanced to cross the light line of the substrate due to the SPP-coupling between the interfaces of the film. Therefore, the SPPs can be immediately transformed into Cherenkov radiation without removing the wavevector mismatch. Additionally, the symmetric SPP mode can also be dramatically lifted to cross the substrate light line when a buffer layer with low permittivity relative to the substrate is introduced. In this case, dual-frequency THz radiation from the two SPP modes can be generated simultaneously. The radiation intensity is significantly enhanced by over two orders due to the field enhancement of the SPPs. The radiation frequency can be tuned in the THz frequency regime by adjusting the beam energy and the chemical potential of the BDSs. Our results could find potential applications in developing room temperature, tunable, coherent, and intense THz radiation sources to cover the entire THz band.

Key words: terahertz radiation sources, surface plasmon polaritons, Cherenkov radiation

中图分类号: (Radiation by moving charges)

41.60.-m

73.20.Mf (Collective excitations (including excitons, polarons, plasmons and other charge-density excitations)) 78.67.-n (Optical properties of low-dimensional, mesoscopic, and nanoscale materials and structures)

赵陶, 吴振华. Cherenkov terahertz radiation from Dirac semimetals surface plasmon polaritons excited by an electron beam[J]. 中国物理B, 2020, 29(3): 34101-034101.

Tao Zhao(赵陶), Zhenhua Wu(吴振华). Cherenkov terahertz radiation from Dirac semimetals surface plasmon polaritons excited by an electron beam[J]. Chin. Phys. B, 2020, 29(3): 34101-034101.

参考文献 31

[1]	Borisenko S, Gibson Q, Evtushinsky D, Zabolotnyy V, Büchner B and Cava R J 2014 Phys. Rev. Lett. 113 027603 doi: 10.1103/PhysRevLett.113.027603
[2]	Neupane M, et al. 2014 Nat. Commun. 5 3786 doi: 10.1038/ncomms4786
[3]	Liu Z K, et al. 2014 Nat. Mater. 13 677 doi: 10.1038/nmat3990
[4]	Liu Z K, et al. 2014 Science 343 864 doi: 10.1126/science.1245085
[5]	Li Q, Kharzeev D E, Zhang C, Huang Y, Pletikosic I, Fedorov A V, Zhong R D, Schneeloch J A, Gu G D and Valla T 2016 Nat. Phys. 12 550 doi: 10.1038/nphys3648
[6]	Hwang E and Sarma S 2007 Phys. Rev. B 75 205418 doi: 10.1103/PhysRevB.75.205418
[7]	Koppens F, Chang D and García de Abajo F 2011 Nano Lett. 11 8 doi: 10.1021/nl100787b
[8]	Ju L, et al. 2011 Nat. Nanotechnol. 6 630 doi: 10.1038/nnano.2011.146
[9]	Vakil A and Engheta N 2011 Science 332 6035
[10]	Babak P, Hassan R S and Mohamed E 2018 Opt. Quantum Electron. 50 303 doi: 10.1007/s11082-018-1569-y
[11]	Zhu H, Deng M, Chen S and Chen L 2019 Opt. Lett. 50 3382
[12]	Jablan M, Buljan H and Soljačić M 2009 Phys. Rev. B 80 245435 doi: 10.1103/PhysRevB.80.245435
[13]	Grigorenko A, Polini M and Novoselov K S 2012 Nat. Photon. 6 749 doi: 10.1038/nphoton.2012.262
[14]	Liang T, Gibson Q, Ali M N, Liu M, Cava R J and Ong N P 2015 Nat. Mater. 14 280 doi: 10.1038/nmat4143
[15]	Kotov O V and Lozovik Yu E 2016 Phys. Rev. B 93 235417 doi: 10.1103/PhysRevB.93.235417
[16]	Das Sarma S and Hwang E H 2009 Phys. Rev. Lett. 102 206412 doi: 10.1103/PhysRevLett.102.206412
[17]	Kharzeev D E, Pisarski R D and Yee H U 2015 Phys. Rev. Lett. 115 236402 doi: 10.1103/PhysRevLett.115.236402
[18]	Hofmann J and Das Sarma S 2015 Phys. Rev. B 91 241108(R)
[19]	Thakur A, Sachdeva R and Agarwal A 2017 J. Phys.: Condens. Matter 29 105701 doi: 10.1088/1361-648X/aa57bd
[20]	Lošić Z B 2017 J. Phys.: Condens. Matter 30 045002
[21]	Siegel P 2002 IEEE Trans. Microw. Theory Tech. 50 910 doi: 10.1109/22.989974
[22]	Tonouchi M 2007 Nat. Photon. 1 97 doi: 10.1038/nphoton.2007.3
[23]	Horiuchi N 2010 Nat. Photon. 4 140 doi: 10.1038/nphoton.2010.16
[24]	Dean P, et al. 2014 J. Phys. D: Appl. Phys. 47 374008 doi: 10.1088/0022-3727/47/37/374008
[25]	Liu S G, Zhang C, Hu M, Chen X X, Zhang P, Gong S, Zhao T and Zhong R B 2014 Appl. Phys. Lett. 104 201104 doi: 10.1063/1.4879017
[26]	Zhan T, Han D, Hu X, Liu X, Chui S and Zi J 2014 Phys. Rev. B 89 245434 doi: 10.1103/PhysRevB.89.245434
[27]	Zhao T, Zhong R B, Hu M, Chen X X, Zhang P, Gong S and Liu S G 2015 Chin. Phys. B 24 094102 doi: 10.1088/1674-1056/24/9/094102
[28]	Gong S, Zhao T, Sanderson M, Hu M, Chen X X, Zhang P, Zhong R B, Zhang C and Liu S G 2015 Appl. Phys. Lett. 106 223107 doi: 10.1063/1.4922261
[29]	Zhao T, et al. 2015 Sci. Rep. 5 16059 doi: 10.1038/srep16059
[30]	Li D, Wang Y, Nakajima M, Hashida M, Wei Y and Miyamoto S 2016 Phys. Lett. A 380 2181 doi: 10.1016/j.physleta.2016.04.020
[31]	Zhao T, Hu M, Zhong R B, Gong S, Zhang C and Liu S G 2017 Appl. Phys. Lett. 110 231102 doi: 10.1063/1.4984961

Cherenkov terahertz radiation from Dirac semimetals surface plasmon polaritons excited by an electron beam

Cherenkov terahertz radiation from Dirac semimetals surface plasmon polaritons excited by an electron beam

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