Spectral spatial coherence of high-power multi-chip LEDs  

作　　者：陈光明 陶华 林惠川 陈子阳 蒲继雄 

机构地区：[1]College of Information Science&Engineering,Huaqiao University [2]Fujian Institute of Education

出　　处：《Optoelectronics Letters》2012年第6期422-425,共4页光电子快报（英文版）

基　　金：supported by the National Natural Science Foundation of China(Nos.60977068and61178015)

摘　　要：We investigate the spatial coherence of the light generated from high-power multi-chip red LEDs by usmg the van Cittert- Zernike theorem. It is theoretically demonstrated that the light generated from multi-chip LEDs evolves into partially coherent light after propagation, and the spatial coherence is increased with the increase of propagation distance. Moreover, the spatial coherence of the light is found to be closely related to the chip distribution of multi-chip LEDs. The distribution of the spatial coherence of the light is experimentally examined by Young＇s double-slit interference. It is found that the experimental results are consistent with the theoretical ones.

关 键 词：Magnetic materials Optoelectronic devices 

分 类 号：TN312.8[电子电信—物理电子学]