In a nano-laser of Si quantum dots (QD), the smaller QD fabricated by nanosecond pulse laser can form the pumping level tuned by the quantum confinement (QC) effect. Coupling between the active centers formed by localized states of surface bonds and the two-dimensional (2D) photonic crystal is used to select model in the nano-laser. The experimental demonstration is reported in which the peaks of stimulated emission at about 600 nm and 700 nm were observed on the Si QD prepared in oxygen after annealing which improves the stimulated emission. It is interesting to make a comparison between the localized electronic states in gap due to defect formed by surface bonds and the localized photonic states in gap of photonic band due to defect of 2D photonic crystal. (C) 2011 Elsevier B. V. All rights reserved.

Publication name	APPLIED SURFACE SCIENCE　Volume: 258 　Issue: 7 　Pages: 3033-3038　 Published: JAN 15 2012
Author(s)	Huang, Wei-Qi; Huang, Zhong-Mei; Miao, Xin-Jiang; Cai, Chen-Lan; Liu, Jia-Xin; Lu, Quan; Liu, Shi-Rong; Qin, Chao-Jian
Corresponding author	HUANG Weiqi  WQHuang2001@yahoo.com  Guizhou Univ, Key Lab Photoelectron Technol & Applicat, Inst Nanophoton Phys, Guiyang 550025, Peoples R China
Author(s) from IGCAS	LIU Shirong; QIN Chaojian

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