2×4正方形微腔激光器阵列的激射特性  

Lasing Characteristics of a 2×4 Square Microcavity Laser Array

作　　者：王玮[1] 陈幼玲 杨珂 绳梦伟 杨跃德[1] 肖金龙[1] 黄永箴[1] Wang Wei;Chen Youling;Yang Ke;Sheng Mengwei;Yang Yuede;Xiao Jinlong;Huang Yongzhen(Key Laboratory of Optoelectronic Materials and Devices,Institute of Semiconductors,Chinese Academy of Sciences,Beijing 100083,China)

机构地区：[1]中国科学院半导体研究所光电子材料与器件重点实验室,北京100083

出　　处：《光学学报》2024年第16期207-212,共6页Acta Optica Sinica

基　　金：国家自然科学基金(12274403,62122073,61935018,12274407)。

摘　　要：制备了以四端口直连波导正方形微腔为基本单元的2×4半导体微腔激光器阵列。上下两排正方形微腔均设计为整体电极以简化实验操作。通过测量不同端口处的输出光谱,每个正方形微腔单元的模式得以识别。进一步地,通过调节注入电流,可以实现模式位置和数量的有效调控。该激光器阵列实现了多路光源的面内集成,为片上大面积集成的微腔激光器提供了可能,并为多端口光源以及全光计算等应用提供了参考。Objective Due to the limitations on data transmission between memory and processing units,as well as RC latency associated with integrated circuits,traditional electronic computers face bottlenecks in power consumption,heat dissipation,and computing speed.All-optical signal processing and all-optical networks have attracted increasing research attention as alternatives to conventional electronic integrated circuits,given their advantages of high-speed parallel processing,low power consumption,high bandwidth,and low crosstalk.Efforts have been made in integrated photonic computing chips for optical computing and optical neural networks.All-optical logic gates provide basic units for all-optical computing,switching,and signal processing.Various all-optical logic gates with functions such as subtractors,differential equation solvers,storage elements,and other computational techniques have been reported.Microcavity lasers like VCSELs and DFBs are well-suited for realizing on-chip all-optical logic gates due to their small size and low power consumption.Here,we design a two-dimensional 2×4 semiconductor laser array of square microcavities with four waveguide ports,consisting of an upper row and a lower row.Integrated electrodes are designed at both rows to ensure that the same current is applied to each microcavity in the same row,simplifying experimental operations.The simple fabrication processes,flexible integration methods,easy on-chip integration,and multi-port light emission of the laser array facilitate its application in all-optical signal processing links.Larger scale on-chip integration can be achieved using high-density integration techniques.Additionally,the platform offers the possibility of wavelength multiplexing for parallel computing.This system thus sheds light on the next generation of all-optical computing systems.Methods Simulation and AlGaInAs/InP epitaxial wafer are employed in our study.First,we study the magnetic field pattern,frequency,longitudinal modes interval,and quality factor(Q)of the

关 键 词：激光器 半导体激光器阵列 二维集成 全光计算 模式调控 

分 类 号：O436[机械工程—光学工程]