纳米碳的白光强辐射(英文)  

White and Bright Radiation from Nanostructured Carbon

作　　者：王绍民[1] 胡来归[1] 吕章德 赵道木[1] 彭图治[2] 曾跃武[2] 杨德仁[3] 赵毅[3] 沙健 牛俊杰 

机构地区：[1]浙江大学物理系光学研究所,杭州310028 [2]浙江大学分析测试中心,杭州310028 [3]浙江大学硅材料科学国家重点实验室,杭州310027 [4]浙江大学物理系凝聚态研究所,杭州310027

出　　处：《光电子．激光》2003年第2期215-220,共6页Journal of Optoelectronics·Laser

基　　金：Project supported by the National Natural Science Foundation of China( 199740 3 8;60 2 760 3 5 )

摘　　要：最近,我们发现非氢化的无定形碳(a-C)在室温、真空并由5种LD激光诱导,当功率密度在1kW/cm2到1MW/cm2之间时,出现上转换连同下转换级联的量子过程,并呈现可见、刺眼的强白光辐射。在10种纳米材料中发现了类似的现象,但a-C的能量转换效率最高,超过50%,隐含着潜力。它可能是纳米的特征辐射,也是一个激光的逆过程。Recently, we have found visible, white and dazzling strong radiation induced by lasers (5 kinds of LDs) from non-hydrogenated amorphous carbon (a-C) at room temperature in vacuum with upconversion and downconversion cascaded quantum process under the laser power density between 1 kW/cm2 and 1 MW/cm2. This phenomenon also exits for other nanostructured materials (10 types) but the energy transformed efficiency of a-C is much higher, more than 50%, which implies potentials. It may be characterized as nano-radiation and it is also a reversed lasing process.

关 键 词：纳米碳 白光强辐射 无定形碳 纳米辐射 激光逆过程 量子 

分 类 号：TN304.18[电子电信—物理电子学] O471.3[理学—半导体物理]