中国物理B ›› 2012, Vol. 21 ›› Issue (6): 64209-064209.doi: 10.1088/1674-1056/21/6/064209

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

Activation of silicon quantum dots and coupling between the active centre and the defect state of the photonic crystal in a nanolaser

黄伟其a, 陈汉琼a, 苏琴a, 刘世荣b, 秦朝建b   

  1. a. Institute of Nanophotonic Physics, Key Laboratory of Photoelectron Technology and Application, Guizhou University, Guiyang 550025, China;
    b. State Key Laboratory of Ore Deposit Geochemistry, Institute of Geochemistry, Chinese Academy of Sciences, Guiyang 550003, China
  • 收稿日期:2011-07-14 修回日期:2011-11-22 出版日期:2012-05-01 发布日期:2012-05-01
  • 基金资助:
    Project supported by the National Natural Science Foundation of China (Grant No. 60966002) and the National Key Laboratory Fund of Surface Physics at Fudan University, (Grant No. 20090606).

Activation of silicon quantum dots and coupling between the active centre and the defect state of the photonic crystal in a nanolaser

Huang Wei-Qi(黄伟其)a)†, Chen Hang-Qiong(陈汉琼)a), Shu Qin(苏琴)a), Liu Shi-Rong(刘世荣)b)‡, and Qin Chao-Jian(秦朝建)b)   

  1. a. Institute of Nanophotonic Physics, Key Laboratory of Photoelectron Technology and Application, Guizhou University, Guiyang 550025, China;
    b. State Key Laboratory of Ore Deposit Geochemistry, Institute of Geochemistry, Chinese Academy of Sciences, Guiyang 550003, China
  • Received:2011-07-14 Revised:2011-11-22 Online:2012-05-01 Published:2012-05-01
  • Contact: Huang Wei-Qi, Liu Shi-Rong E-mail:WQHuang2001@yahoo.com; Shirong@yahoo.com
  • Supported by:
    Project supported by the National Natural Science Foundation of China (Grant No. 60966002) and the National Key Laboratory Fund of Surface Physics at Fudan University, (Grant No. 20090606).

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摘要： A new nanolaser concept using silicon quantum dots (QDs) is proposed. The conduction band opened by the quantum confinement effect gives the pumping levels. Localized states in the gap due to some surface bonds on Si QDs can be formed for the activation of emission. An inversion of population can be generated between the localized states and the valence band in a QD fabricated by using a nanosecond pulse laser. Coupling between the active centres formed by localized states and the defect states of the two-dimensional (2D) photonic crystal can be used to select the model in the nanolaser.

关键词: nanolaser, Si quantum dots, localized states, photonic crystal

Abstract: A new nanolaser concept using silicon quantum dots (QDs) is proposed. The conduction band opened by the quantum confinement effect gives the pumping levels. Localized states in the gap due to some surface bonds on Si QDs can be formed for the activation of emission. An inversion of population can be generated between the localized states and the valence band in a QD fabricated by using a nanosecond pulse laser. Coupling between the active centres formed by localized states and the defect states of the two-dimensional (2D) photonic crystal can be used to select the model in the nanolaser.

Key words: nanolaser, Si quantum dots, localized states, photonic crystal

中图分类号:  (Lasers)

  • 42.55.-f
68.65.Hb (Quantum dots (patterned in quantum wells)) 78.45.+h (Stimulated emission) 78.55.Mb (Porous materials)