中国物理B ›› 2023, Vol. 32 ›› Issue (1): 17303-017303.doi: 10.1088/1674-1056/ac70bf

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Nonlinear optical rectification of GaAs/Ga1-xAlxAs quantum dots with Hulthén plus Hellmann confining potential

Yi-Ming Duan(段一名) and Xue-Chao Li(李学超)   

  1. School of Mechanics and Optoelectronics Physics, Anhui University of Science and Technology, Huainan 232001, China
  • 收稿日期:2022-04-08 修回日期:2022-05-12 接受日期:2022-05-18 出版日期:2022-12-08 发布日期:2022-12-20
  • 通讯作者: Xue-Chao Li E-mail:xuechao80@126.com
  • 基金资助:
    Project supported by the National Natural Science Foundation of China (Grant Nos. 51702003, 61775087, 11674312, 52174161, and 12174161).

Nonlinear optical rectification of GaAs/Ga1-xAlxAs quantum dots with Hulthén plus Hellmann confining potential

Yi-Ming Duan(段一名) and Xue-Chao Li(李学超)   

  1. School of Mechanics and Optoelectronics Physics, Anhui University of Science and Technology, Huainan 232001, China
  • Received:2022-04-08 Revised:2022-05-12 Accepted:2022-05-18 Online:2022-12-08 Published:2022-12-20
  • Contact: Xue-Chao Li E-mail:xuechao80@126.com
  • Supported by:
    Project supported by the National Natural Science Foundation of China (Grant Nos. 51702003, 61775087, 11674312, 52174161, and 12174161).

摘要: We investigate the nonlinear optical rectification (NOR) of spherical quantum dots (QDs) under Hulthén plus Hellmann confining potential with the external tuning elements. Energy and wavefunction are determined by using the Nikiforov-Uvarov method. Expression for the NOR coefficient is derived by the density matrix theory. The results show that the applied external elements and internal parameters of this system have a strong influence on intraband nonlinear optical properties. It is hopeful that this tuning of the nonlinear optical properties of GaAs/Ga1-xAlxAs QDs can make a greater contribution to preparation of new functional optical devices.

关键词: nonlinear optical rectification, quantum dots, Hulthén plus Hellmann potential, Nikiforov-Uvarov method

Abstract: We investigate the nonlinear optical rectification (NOR) of spherical quantum dots (QDs) under Hulthén plus Hellmann confining potential with the external tuning elements. Energy and wavefunction are determined by using the Nikiforov-Uvarov method. Expression for the NOR coefficient is derived by the density matrix theory. The results show that the applied external elements and internal parameters of this system have a strong influence on intraband nonlinear optical properties. It is hopeful that this tuning of the nonlinear optical properties of GaAs/Ga1-xAlxAs QDs can make a greater contribution to preparation of new functional optical devices.

Key words: nonlinear optical rectification, quantum dots, Hulthén plus Hellmann potential, Nikiforov-Uvarov method

中图分类号:  (Quantum dots)

  • 73.21.La
96.12.Hg (Magnetic field and magnetism) 33.80.-b (Photon interactions with molecules)