Miniband lasing in a 1D dual-periodic photonic crystal

被引：2
作者：
Ying, C. F. [1 ]
Zhou, W. Y. [1 ]
Ye, Q. [1 ]
Li, Y. [1 ]
Yang, N. [1 ]
Tian, J. G. [1 ]
机构：
[1] Nankai Univ, Sch Phys, Minist Educ, Key Lab Weak Light Nonlinear Photon, Tianjin 300071, Peoples R China
来源：
LASER PHYSICS LETTERS | 2013年 / 10卷 / 05期
关键词：
SLOW-LIGHT; BAND; LASER; LATTICE; EDGE;
D O I：
10.1088/1612-2011/10/5/056001
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
In this letter, we demonstrate miniband lasing in a 1D dual-periodic photonic crystal (PC). The lasing efficiency is dramatically enhanced by about eight times and meanwhile the threshold is decreased to about 1/6 of that of the band-edge lasing in a single-periodic PC. This high optical conversion efficiency can be attributed to the extremely flat dispersion and large mode volume of the miniband induced by dual-periodicity. Numerical studies are presented to explain the mechanism of the spontaneous emission enhancement induced by the miniband, which are in good accord with our experiments. This finding may provide potential applications to low-threshold lasers and the semiconductor laser community.
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页数：6
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