Enabling enhanced emission and low-threshold lasing of organic molecules using special Fano resonances of macroscopic photonic crystals

被引:113
作者
Zhen, Bo [1 ]
Chua, Song-Liang [1 ]
Lee, Jeongwon [1 ]
Rodriguez, Alejandro W. [1 ]
Liang, Xiangdong [1 ]
Johnson, Steven G. [1 ]
Joannopoulos, John D. [1 ]
Soljacic, Marin [1 ]
Shapira, Ofer [1 ]
机构
[1] MIT, Elect Res Lab, Cambridge, MA 02139 USA
基金
美国国家科学基金会;
关键词
fluorescence enhancement; enhanced light-matter interaction; INHIBITED SPONTANEOUS EMISSION; OPTICAL BIOSENSORS; QUANTUM DOTS; DYE-LASERS; EFFICIENCY; SURFACE;
D O I
10.1073/pnas.1311866110
中图分类号
O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];
学科分类号
07 ; 0710 ; 09 ;
摘要
The nature of light interaction with matter can be dramatically altered in optical cavities, often inducing nonclassical behavior. In solid-state systems, excitons need to be spatially incorporated within nanostructured cavities to achieve such behavior. Although fascinating phenomena have been observed with inorganic nanostructures, the incorporation of organic molecules into the typically inorganic cavity is more challenging. Here, we present a unique optofluidic platform comprising organic molecules in solution suspended on a photonic crystal surface, which supports macroscopic Fano resonances and allows strong and tunable interactions with the molecules anywhere along the surface. We develop a theoretical framework of this system and present a rigorous comparison with experimental measurements, showing dramatic spectral and angular enhancement of emission. We then demonstrate that these enhancement mechanisms enable lasing of only a 100-nm thin layer of diluted solution of organic molecules with substantially reduced threshold intensity, which has important implications for organic light-emitting devices and molecular sensing.
引用
收藏
页码:13711 / 13716
页数:6
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