首页>
外国专利>
Cadmium sulfide quantum dot lasing in room temperature liquid solution
Cadmium sulfide quantum dot lasing in room temperature liquid solution
展开▼
机译：室温条件下硫化镉量子点激射
展开▼
页面导航
摘要
著录项
相似文献
摘要
Disclosed is a lasing complex comprising a room temperature solution containing cadmium sulfide (CdS) quantum dots. Optical gain has been observed in CdS nanocrystal quantum dots in strong confinement regime in toluene solution at room temperature using femtosecond transient absorption techniques. The optical gain lifetime is measured to be 20 picoseconds under pump fluence of 0.77 mJ/cm2. The relative lower gain threshold compared to that of CdSe quantum dots is attributed to the long lifetime of fluorescence and biexcitons and the relatively sharp photoluminescence linewidth. The CdS nanocrystals are excellent gain media for semiconductor quantum dot based blue lasers.
展开▼
机译：公开了一种激光复合体，其包括含有硫化镉（CdS）量子点的室温溶液。使用飞秒瞬态吸收技术，在室温下在甲苯溶液中的强限制条件下，在CdS纳米晶体量子点中观察到了光增益。在0.77 mJ / cm 2 的泵浦注量下，光学增益寿命为20皮秒。与CdSe量子点相比，相对较低的增益阈值归因于荧光和双激子的长寿命以及相对尖锐的光致发光线宽。 CdS纳米晶体是基于半导体量子点的蓝色激光器的出色增益介质。
展开▼
