硅氮化物光子晶体上量子点的双光子激发荧光的修饰。

Modification of two-photon excited fluorescence from quantum dots on SiN photonic crystals.

机构信息

State Key Laboratory of Integrated Optoelectronics, Institute of Semiconductors, Chinese Academy of Sciences,Beijing 100083, China.

出版信息

Opt Lett. 2010 Feb 1;35(3):309-11. doi: 10.1364/OL.35.000309.

DOI:10.1364/OL.35.000309

PMID:20125704

Abstract

We investigate two-photon excited fluorescence from CdSe quantum dots with a center-emitting wavelength of 655 nm on SiN photonic crystals. We find that two-photon excited fluorescence is enhanced by more than 1 order of magnitude in the vertical direction when a photonic crystal is used compared to the fluorescence spectra in the absence of photonic crystals. The spectrum of two-photon excited fluorescence from quantum dots on SiN photonic crystal is observed to shift to blue compared to that from quantum dots on SiN without photonic crystals.

摘要

我们研究了中心发射波长为 655nm 的 CdSe 量子点在 SiN 光子晶体上的双光子激发荧光。我们发现，与没有光子晶体时的荧光谱相比，当使用光子晶体时，在垂直方向上双光子激发荧光增强了 1 个数量级以上。与 SiN 无光子晶体上的量子点的双光子激发荧光相比，SiN 光子晶体上的量子点的双光子激发荧光光谱观察到向蓝移。