首页|Near-infrared organic lasers with ultra-broad emission bands by simultaneously harnessing four-level and six-level systems
Near-infrared organic lasers with ultra-broad emission bands by simultaneously harnessing four-level and six-level systems
扫码查看
点击上方二维码区域，可以放大扫码查看
原文链接
万方数据
维普
Organic lasers with broad emission bands in near-infrared(NIR)region are crucial for their applications in laser communication,night-vision as well as bioimaging owing to the abundance of selectable lasing wavelengths.However,for most organic gain materials,gain regions are limited in a small wavelength range because of the fixed energy level systems.Herein,we design a strategy to realize NIR organic lasers with broad emission bands based on tunable energy level systems induced by cascaded excited-state intramolecular proton transfer(ESIPT).A novel gain material named DHNN was developed,which can undergo a cascaded double-ESIPT process supporting four-level and six-level systems simultaneously.By doping DHNN into polystyrene microspheres,NIR lasers with tunable emission bands can be achieved based on the careful modulation of microcavities.Finally,organic lasers with an ultra-broad emission band ranging from 700 nm to 900 nm was successfully achieved by harnessing four-level and six-level systems simultaneously.
Excited-state intramolecular proton transferOrganic solid-state laserWide gain intervalNear-infrared emissionMolecular design
Lei Wang、Jun-Jie Wu、Chang-Cun Yan、Wan-Ying Yang、Zong-Lu Che、Xin-Yu Xia、Xue-Dong Wang、Liang-Sheng Liao
展开 >
Jiangsu Key Laboratory for Carbon-Based Functional Materials & Devices,Institute of Functional Nano & Soft Materials(FUNSOM),Soochow University,Suzhou 215123,China
Jiangsu Engineering Laboratory of Novel Functional Polymeric Materials,College of Chemistry,Chemical Engineering and Materials Science,Soochow University,Suzhou 215123,China
Macao Institute of Materials Science and Engineering,Macau University of Science and Technology,Macau SAR 999078,China
万方数据
维普
