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Non-perturbative multiphoton excitation studies in an excitonic coupled quantum well system using high-intensity THz laser fields |
| Monica Gambhir1, Vinod Prasad1,2 |
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 |
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Abstract Multiphoton excitations and nonlinear optical properties of exciton states in GaAs/AlxGa1-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.
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Received: 18 March 2019
Revised: 03 June 2019
Accepted manuscript online:
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PACS:
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78.67.De
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(Quantum wells)
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78.67.-n
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(Optical properties of low-dimensional, mesoscopic, and nanoscale materials and structures)
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71.35.-y
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(Excitons and related phenomena)
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Corresponding Authors:
Monica Gambhir
E-mail: monicagdu@gmail.com
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Cite this article:
Monica Gambhir, Vinod Prasad Non-perturbative multiphoton excitation studies in an excitonic coupled quantum well system using high-intensity THz laser fields 2019 Chin. Phys. B 28 087803
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