中国物理B ›› 2016, Vol. 25 ›› Issue (6): 64201-064201.doi: 10.1088/1674-1056/25/6/064201

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

Optical bistability and multistability via double dark resonance in graphene nanostructure

Seyyed Hossein Asadpour, G Solookinejad, M Panahi, E Ahmadi Sangachin   

  1. Department of Physics, Marvdasht Branch, Islamic Azad University, Marvdasht, Iran
  • 收稿日期:2015-12-17 修回日期:2016-01-19 出版日期:2016-06-05 发布日期:2016-06-05
  • 通讯作者: Seyyed Hossein Asadpour E-mail:s.hosein.asadpour@gmail.com

Optical bistability and multistability via double dark resonance in graphene nanostructure

Seyyed Hossein Asadpour, G Solookinejad, M Panahi, E Ahmadi Sangachin   

  1. Department of Physics, Marvdasht Branch, Islamic Azad University, Marvdasht, Iran
  • Received:2015-12-17 Revised:2016-01-19 Online:2016-06-05 Published:2016-06-05
  • Contact: Seyyed Hossein Asadpour E-mail:s.hosein.asadpour@gmail.com

摘要:

Electrons in graphene nanoribbons can lead to exceptionally strong optical responses in the infrared and terahertz regions owing to their unusual dispersion relation. Therefore, on the basis of quantum optics and solid-material scientific principles, we show that optical bistability and multistability can be generated in graphene nanostructure under strong magnetic field. We also show that by adjusting the intensity and detuning of infrared laser field, the threshold intensity and hysteresis loop can be manipulated efficiently. The effects of the electronic cooperation parameter which are directly proportional to the electronic number density and the length of the graphene sample are discussed. Our proposed model may be useful for the nextgeneration all-optical systems and information processing based on nano scale devices.

关键词: optical bistability, optical multistability, graphene nanostructure

Abstract:

Electrons in graphene nanoribbons can lead to exceptionally strong optical responses in the infrared and terahertz regions owing to their unusual dispersion relation. Therefore, on the basis of quantum optics and solid-material scientific principles, we show that optical bistability and multistability can be generated in graphene nanostructure under strong magnetic field. We also show that by adjusting the intensity and detuning of infrared laser field, the threshold intensity and hysteresis loop can be manipulated efficiently. The effects of the electronic cooperation parameter which are directly proportional to the electronic number density and the length of the graphene sample are discussed. Our proposed model may be useful for the nextgeneration all-optical systems and information processing based on nano scale devices.

Key words: optical bistability, optical multistability, graphene nanostructure

中图分类号:  (Quantum optics)

  • 42.50.-p
42.65.Pc (Optical bistability, multistability, and switching, including local field effects)