THz Output Improvement in a Photomixer with a Resonant-Cavity-Enhanced Structure  

作　　者：DU Ming-Di SUN Jun-Qiang CHENG Wen-Long 杜鸣笛;孙军强;程文龙(Wuhan National Laboratory for Optoelectronics,School of Optoelectronic Science and Engineering,Huazhong University of Science and Technology,Wuhan 430074)

机构地区：[1]Wuhan National Laboratory for Optoelectronics,School of Optoelectronic Science and Engineering,Huazhong University of Science and Technology,Wuhan 430074

出　　处：《Chinese Physics Letters》2012年第4期79-81,共3页中国物理快报（英文版）

基　　金：Supported by the National Natural Science Foundation of China under Grant No 60977044.

摘　　要：We carry out a detailed theoretical study on THz coherent generation in an LTG-GaAs photomixer with a resonant-cavity-enhanced (RCE) structure.In the structure,an improvement in THz output can be achieved by increasing the quantum effciency.Under optimized structure parameters,the maximum quantum efficiency of the RCE photomixer is 93%,which is 2.82 times higher than that of the case without an RCE structure.The corresponding THz output ratio of the two structures is found to be about eight in the whole range of the lower frequency at the same incident optical power.

关 键 词：MIXER RCE QUANTUM 

分 类 号：TN2[电子电信—物理电子学]