State Key Laboratory of Integrated Optoelectronics, Institute of Semiconductors, Chinese Academy of Sciences,Beijing 100083, China.
Opt Lett. 2010 Feb 1;35(3):309-11. doi: 10.1364/OL.35.000309.
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.
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。
