4.8 Article

Stimulated emission from PbS-quantum dots in glass matrix

期刊

LASER & PHOTONICS REVIEWS
卷 7, 期 1, 页码 L1-L5

出版社

WILEY-V C H VERLAG GMBH
DOI: 10.1002/lpor.201200075

关键词

Stimulated emission; PbS quantum dots; glass matrix; laser

资金

  1. NSFC [60906043]
  2. SRF for the Doctoral Program of Higher Education of China [20090076120010]

向作者/读者索取更多资源

The luminescence behavior of PbS-quantum dots in glass matrix (PbS:Glass) is investigated. Steady-state and time-resolved photoluminescence are applied in a wide range of excitation densities up to pulse energies exceeding 50 mu J/cm(2). While perfect linear recombination is observed across four orders of magnitude, an additional radiative recombination mechanism emerges at an excitation density of 1 mu J/cm(2) per pulse at 390 nm excitation and increases the external quantum efficiency. The time constant of this process is similar to 20-40 ps. It is ascribed to stimulated emission. No hint to any non-linear non-radiative processes such as Auger recombination is observed. Thermal effects, however, still set limits. This is encouraging news for PbS: Glass as potential laser material.

作者

我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。

评论

主要评分

4.8
评分不足

次要评分

新颖性
-
重要性
-
科学严谨性
-
评价这篇论文

推荐

暂无数据
暂无数据