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题名: Lasing of CdSSe quantum dots in glass spherical microcavity
作者: Lu SL;  Jia R;  Jiang DS;  Li SS
发表日期: 2003
摘要: Glass spherical microcavities containing CdSSe semiconductor quantum dots (QDs) of a few microns in diameter are fabricated using a physical method. When a single glass microspherical cavity is excited by a laser beam at room temperature, very strong and sharp whispering gallery modes are shown on the background of PL spectra of CdSSe QDs, which confirms that coupling between the optical emission of embedded QDs and spherical cavity modes is realized. For a glass microsphere only 4.6 mum in diameter, it was found that the energy separation is nearly up to 26 nm both for TE and TM modes. With the increasing excitation intensity, the excitation intensity dependence of the emission intensity is not linear in the double-logarithmic scale. Above the threshold value, the linewidths of resonance modes become narrower. The lasing behavior is achieved at relatively low excitation intensity at room temperature. High optical stability and low threshold value make this optical system promising in visible microlaser applications. (C) 2002 Elsevier Science B.V. All rights reserved.
KOS主题词: Quantum dots;  lasing
刊名: PHYSICA E-LOW-DIMENSIONAL SYSTEMS & NANOSTRUCTURES
专题: 中国科学院半导体研究所(2009年前)_期刊论文

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推荐引用方式:
Lu SL; Jia R; Jiang DS; Li SS .Lasing of CdSSe quantum dots in glass spherical microcavity ,PHYSICA E-LOW-DIMENSIONAL SYSTEMS & NANOSTRUCTURES,2003 ,17 (1-4):453-455
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