Novel cone lasing emission in a non-uniform one-dimensional photonic crystal

被引：4

作者：

Li, Yi ^{[1
,2
]}

Zhou, Wen-Yuan ^{[1
,2
]}

Ying, Cui-Feng ^{[1
,2
,3
,4
,5
]}

Yang, Na ^{[1
,2
]}

Chen, Shao-Jie ^{[1
,2
]}

Ye, Qing ^{[1
,2
]}

Tian, Jian-Guo ^{[1
,2
]}

机构：

[1] Nankai Univ, Key Lab Weak Light Nonlinear Photon, Minist Educ, Tianjin 300071, Peoples R China

[2] Nankai Univ, Sch Phys, Tianjin 300071, Peoples R China

[3] Nankai Univ, Coll Chem, Key Lab Funct Polymer Mat, Tianjin 300071, Peoples R China

[4] Nankai Univ, Coll Chem, Ctr Nanoscale Sci & Technol, Inst Polymer Chem, Tianjin 300071, Peoples R China

[5] Nankai Univ, Coll Chem, Synerget Innovat Ctr Chem Sci & Engn, Tianjin 300071, Peoples R China

来源：

JOURNAL OF OPTICS | 2015年 / 17卷 / 06期

基金：

中国国家自然科学基金; 对外科技合作项目（国际科技项目）; 中国博士后科学基金;

关键词：

dye lasers; photonic crystal; non-uniform structure; holographic grating; CHOLESTERIC LIQUID-CRYSTAL; BAND; HOLOGRAMS;

D O I：

10.1088/2040-8978/17/6/065403

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

Novel cone lasing emission is observed from a photonic crystal (PC) with graded layers, which is fabricated by two-beam holographic interference in dichromated gelatin. The cone lasing is composed of one lasing spot and one concentric lasing ring. The good agreement between the experimental results and a numerical simulation performed using the transfer matrix method demonstrates that this lasing ring is induced by the coupling between the band edge and minigap, which is represented as some oscillations near the band edge in the passband of the reflection spectrum. The cone lasing may be useful for multi-wavelength fluorescence detection since the dual-colour directional enhanced fluorescence can be achieved without the mutual interference of lasing modes. Moreover, this readily observable cone lasing provides a direct visualization of the dispersion relation of non-uniform PCs.

引用

页数：5

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