红外与毫米波学报2023，Vol.42Issue(6)：724-730,7.DOI:10.11972/j.issn.1001-9014.2023.06.003
谐振腔增强带间级联中红外发光二极管的研究
Studies of resonator-enhanced mid-infrared interband cascade light emitting diode
摘要
Abstract
The mid-infrared light emitting diodes based on the interband cascade structure and resonant cavity structure are simulated and designed.Based on the traditional interband cascade LED,a distributed Bragg reflector(DBR)struc-ture is introduced outside the device to form a resonant interband cascade LED.The parameters of the resonant cavity are simulated and optimized,including the number of DBR cycles,the length of the resonator,the position of the active region in the resonator,and the optimized device structure is obtained.The simulation results show that the device using ZnS/Ge DBR with one period as the upper mirror of the resonator has the highest output power.When the active region is located at the peak of the electric field intensity in the resonant cavity,the device will have the highest output power.The output power of the three-stage resonant cavity interband cascade LED device is equivalent to that of the 55-stage device without a resonant cavity.Meanwhile,the output light has a better direction,and the full width at half peak of the far field distribution can be reduced from 92 degrees to 52 degrees.Combined with the test results of the fabricated 5-stage interband cascade LED device,the simulation results after adding a resonant cavity structure indicate that the ra-diance of the peak wavelength is increased by 11.7 times,the integrated radiance is increased by 5.43 times,and the full-width at half-maximum is narrowed by 6.45 times.关键词
发光二极管/谐振腔/带间级联/辐射增强Key words
light emitting diode/resonant cavity/interband cascade/radiation enhancement分类
信息技术与安全科学引用本文复制引用
张旺霖,柴旭良,周易,裴金狄..谐振腔增强带间级联中红外发光二极管的研究[J].红外与毫米波学报,2023,42(6):724-730,7.基金项目
国家自然科学基金(61904183,61974152,62104237,62004205),中国科学院青年创新促进会会员资助(Y202057),上海市科技启明星计划(20QA1410500),上海市扬帆计划(21YF1455000) Supported by the National Natural Science Foundation of China(NSFC)(61904183,61974152,62104237,62004205),the Youth Innovation Promotion Association of the Chinese Academy of Sciences(Y202057),Shanghai Rising-Star Program(20QA1410500),Shanghai Sail Plans(21YF1455000) （61904183,61974152,62104237,62004205）
