锑化物I型量子阱组分调控及其窄线宽激光器研究

项目名称： 锑化物I型量子阱组分调控及其窄线宽激光器研究

项目编号： No.61474010

项目类型： 面上项目

立项/批准年度： 2015

项目学科： 无线电电子学、电信技术

项目作者： 魏志鹏

作者单位： 长春理工大学

项目金额： 88万元

中文摘要： 2-5μm波段是重要的大气窗口，针对该波段发展应用于大气污染监测、传感等技术的激光光源具有极为重要的研究意义。目前锑化物激光器在波长拓展和功率提升等方面取得了一定进展，而在满足气体探测领域所需的窄线宽激光方面研究较少。本项目将开展InGaAsSb/AlGaAsSbI型量子阱激光器材料外延和器件工艺两方面研究工作，通过四元合金组分控制实现对量子阱、波导层和限制层的精确调控，提高激光输出可控性，通过合理的光栅结构提高激光输出质量。针对As分子结合率低的问题，采用Sb2/Sb4混合的Sb束流，从调控降低Sb分子活性角度，提出As2和(Sb2/Sb4)构成V族元素混合束流方案，有效提高As分子结合率，实现对合金薄膜组分的精确控制。将有效折射率微扰光栅结构应用于锑化物激光器实现窄线宽激光输出。

中文关键词： 半导体激光器；锑化镓；窄线宽；量子阱；组分调控

英文摘要： The 2-5μm wavelength range is the important atmospheric window. The development of 2-5μm laser source is important for the applications such as air-monitroing, chemical detection and remote sensing. Now, the research work are mainly about materials epitaxy and device design, but few reports about antimonide laser with narrow linewidth. In order to meet requirements of laser source on gas detection. We are proposing a research project including InGaAsSb/AlGaAsSb quantum well laser materials epitaxy, device design and properties investigation. To solve GaSb based four elements alloys component and narrow linewidth laser output problems. For high activity of Sb molecule and As molecule with low rate, we use Sb2/Sb4 mixed beam to control and reduce activity of Sb molecule, then As2 and (Sb2/Sb4 ) method is proposed, whicn can enhance the binding rate of As molecule, achieve the objective of alloys component adjustment. By the effective refractive index perturbation grating structure, we can obtain laser beam with narrow linewidth. The result will be the an important significance for gas detection.

英文关键词： semiconductor laser;GaSb;narrow line width;quantum well;component adjustment