Two-photon absorption and lasing due to biexciton in CuCl quantum dots

被引：14

作者：

Kagotani, Y

Miyajima, K

Oohata, G

Saito, S

Ashida, M

Edamatsu, K

Itoh, T

机构：

[1] Osaka Univ, Grad Sch Engn Sci, Div Frontier Mat Phys, Itoh Lab, Toyonaka, Osaka 5608531, Japan

[2] Tohoku Univ, Elect Commun Res Inst, Aoba Ku, Sendai, Miyagi 9808577, Japan

[3] Natl Inst Informat & Commun Technol, Kansai Adv Res Ctr, Nishi Ku, Kobe, Hyogo 6512492, Japan

来源：

JOURNAL OF LUMINESCENCE | 2005年 / 112卷 / 1-4期

关键词：

quantum dots laser; two-photon absorption; lasing from biexcitons;

D O I：

10.1016/j.jlumin.2004.09.007

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We have demonstrated laser emission in CuCl quantum dots embedded in NaCl matrix by direct creation of biexcitons through two-photon absorption process. Mode distance and emitting direction of laser emission show that cavity is composed of cleaved surfaces of the matrix. In addition, we confirmed that the lasing originated from the biexciton state by taking account of the polarization selection rule of the lowest biexciton state. It is suggested that two-photon excitation of the biexcitons is very useful for high-efficient lasing in quantum dots. (c) 2004 Elsevier B.V. All rights reserved.

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页码：113 / 116

页数：4

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