1Low threshold random lasing in dye-doped silica nano powders

被引：18

作者：

Garcia-Revilla, Sara ^{[1
]}

Zayat, Marcos ^{[2
]}

Balda, Rolindes ^{[1
,3
,4
]}

Al-Saleh, Mohammad ^{[1
]}

Levy, David ^{[2
]}

Fernandez, Joaquin ^{[1
,3
,4
]}

机构：

[1] Escuela Tecn Super Ingn, Dept Fis Aplicada 1, Bilbao 48013, Spain

[2] CSIC, Inst Ciencia Mat Madrid, ICMM, E-28049 Madrid, Spain

[3] EHU, UPV, CSIC, Unidad Fis Mat, San Sebastian 20080, Spain

[4] Donostia Int Phys Ctr, San Sebastian 20080, Spain

来源：

OPTICS EXPRESS | 2009年 / 17卷 / 15期

关键词：

STRONGLY SCATTERING MEDIA; RANDOM LASERS; STIMULATED-EMISSION; RHODAMINE; 6G; GAIN MEDIA; EXCITATION; BEHAVIOR;

D O I：

10.1364/OE.17.013202

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

Random laser action is demonstrated in two kinds of powder samples containing rhodamine 6G (Rh6G) doped SiO2 nanoparticles which are either directly dispersed within pure silica particles or embedded in a silica gel matrix which is subsequently ground. Both organic-inorganic hybrid materials present different laser thresholds and emission features which are systematically studied and compared. The dependence of the emission kinetics, emission spectrum, random laser threshold and slope efficiency on the dye doped nanoparticles concentration is investigated in both cases. We also explore if the incorporation of additional TiO2 scatterers could enhance the random laser operation of the studied systems. (C) 2009 Optical Society of America

引用

页码：13202 / 13215

页数：14

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