Mie resonances to tailor random lasers

被引：21
作者：
Garcia, P. D. [1 ,2 ]
Ibisate, M. [1 ,2 ]
Sapienza, R. [1 ,2 ]
Wiersma, D. S. [3 ,4 ]
Lopez, C. [1 ,2 ]
机构：
[1] CSIC, Inst Ciencia Mat Madrid, E-28049 Madrid, Spain
[2] CSIC UVigo, Unidad Asociada, Madrid, Spain
[3] European Lab Nonlinear Spect, I-50019 Florence, Italy
[4] INFM BEC, I-50019 Florence, Italy
来源：
PHYSICAL REVIEW A | 2009年 / 80卷 / 01期
关键词：
SCATTERING; LIGHT; GAIN; DYE;
D O I：
10.1103/PhysRevA.80.013833
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
In this paper, we present an optical characterization of photonic glass-based random lasers. We show how the resonant behavior of diffuse light transport through such systems can tailor the lasing emission when a gain medium is added to the glass. A DNA-based organic dye is used as gain medium. The resonances in the transport mean-free path influence the lasing wavelength of the random laser. The laser wavelength is therefore controlled by the sphere diameter. Furthermore, the existence of Mie resonances reduces the necessary pump energy to reach the lasing threshold.
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页数：6
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