A highly efficient directional molecular white-light emitter driven by a continuous-wave laser diode
A highly efficient directional molecular white-light emitter driven by a continuous-wave laser diode
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DOI：
10.1126/science.aaf6138
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发表时间：
2016-06-10
期刊：
影响因子：
56.9
通讯作者：
Chatterjee, Sangam
中科院分区：
文献类型：
--
作者：
Rosemann, Nils W. i;Eussner, Jens P.;Chatterjee, Sangam
定制光源通过优化发射光谱或颜色和发射特性，取得了很大的技术进步和科学进步。我们展示了一个高效的频谱宽带和高定向暖白光发射器基于非线性过程驱动的廉价，低功率的连续波红外激光二极管。非线性介质是一种特殊设计的非晶材料，由不对称的类金刚石簇分子组成，这些分子很容易从无处不在的资源中获得。光谱的可见部分类似于2900开尔文的钨卤灯的颜色，同时保留了驱动激光的优越光束发散。这种使最先进的节能半导体激光器功能化的方法，使发光二极管的技术互补，在高亮度应用中取代白炽灯白光发射器。
Tailored light sources have greatly advanced technological and scientific progress by optimizing the emission spectrum or color and the emission characteristics. We demonstrate an efficient spectrally broadband and highly directional warm-white-light emitter based on a nonlinear process driven by a cheap, low-power continuous-wave infrared laser diode. The nonlinear medium is a specially designed amorphous material composed of symmetry-free, diamondoid-like cluster molecules that are readily obtained from ubiquitous resources. The visible part of the spectrum resembles the color of a tungsten-halogen lamp at 2900 kelvin while retaining the superior beam divergence of the driving laser. This approach of functionalizing energy-efficient state-of-the-art semiconductor lasers enables a technology complementary to light-emitting diodes for replacing incandescent white-light emitters in high-brilliance applications.