Non-perturbative multiphoton excitation studies in an excitonic coupled quantum well system using high-intensity THz laser fields

doi:10.1088/1674-1056/28/8/087803

中国物理B ›› 2019, Vol. 28 ›› Issue (8): 87803-087803.doi: 10.1088/1674-1056/28/8/087803

• CONDENSED MATTER: ELECTRONIC STRUCTURE, ELECTRICAL, MAGNETIC, AND OPTICAL PROPERTIES • 上一篇下一篇

Non-perturbative multiphoton excitation studies in an excitonic coupled quantum well system using high-intensity THz laser fields

Monica Gambhir, Vinod Prasad

1 Department of Physics, Swami Shraddhanand College, University of Delhi, Delhi 110036, India;
2 Departmento de Quimica, Universidad Autónoma Metropolitana, San Rafael Atlixco No. 186, Iztapalapa, México DF 09340, Mexico

收稿日期:2019-03-18 修回日期:2019-06-03 出版日期:2019-08-05 发布日期:2019-08-05
通讯作者: Monica Gambhir E-mail:monicagdu@gmail.com

Non-perturbative multiphoton excitation studies in an excitonic coupled quantum well system using high-intensity THz laser fields

Monica Gambhir¹, Vinod Prasad^1,2

1 Department of Physics, Swami Shraddhanand College, University of Delhi, Delhi 110036, India;
2 Departmento de Quimica, Universidad Autónoma Metropolitana, San Rafael Atlixco No. 186, Iztapalapa, México DF 09340, Mexico

Received:2019-03-18 Revised:2019-06-03 Online:2019-08-05 Published:2019-08-05
Contact: Monica Gambhir E-mail:monicagdu@gmail.com

摘要/Abstract

摘要： Multiphoton excitations and nonlinear optical properties of exciton states in GaAs/Al_xGa_1-xAs coupled quantum well structure have been theoretically investigated under the influence of a time-varying high-intensity terahertz (THz) laser field. Non-perturbative Floquet theory is employed to solve the time-dependent equation of motion for the laser-driven excitonic quantum well system. The response to the field parameters, such as intensity and frequency of the laser electric field on the state populations, can be used in various optical semiconductor device applications, such as photodetectors, sensors, all-optical switches, and terahertz emitters.

关键词: quantum well, excitons, terahertz, non-perturbative, multiphoton, laser, Floquet

Abstract: Multiphoton excitations and nonlinear optical properties of exciton states in GaAs/Al_xGa_1-xAs coupled quantum well structure have been theoretically investigated under the influence of a time-varying high-intensity terahertz (THz) laser field. Non-perturbative Floquet theory is employed to solve the time-dependent equation of motion for the laser-driven excitonic quantum well system. The response to the field parameters, such as intensity and frequency of the laser electric field on the state populations, can be used in various optical semiconductor device applications, such as photodetectors, sensors, all-optical switches, and terahertz emitters.

Key words: quantum well, excitons, terahertz, non-perturbative, multiphoton, laser, Floquet

中图分类号: (Quantum wells)

78.67.De

78.67.-n (Optical properties of low-dimensional, mesoscopic, and nanoscale materials and structures) 71.35.-y (Excitons and related phenomena)

Monica Gambhir, Vinod Prasad. Non-perturbative multiphoton excitation studies in an excitonic coupled quantum well system using high-intensity THz laser fields[J]. 中国物理B, 2019, 28(8): 87803-087803.

Monica Gambhir, Vinod Prasad. Non-perturbative multiphoton excitation studies in an excitonic coupled quantum well system using high-intensity THz laser fields[J]. Chin. Phys. B, 2019, 28(8): 87803-087803.

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Non-perturbative multiphoton excitation studies in an excitonic coupled quantum well system using high-intensity THz laser fields

Non-perturbative multiphoton excitation studies in an excitonic coupled quantum well system using high-intensity THz laser fields

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