New approaches to pulsed light generation in semiconductor quantum dot lasers

半导体量子点激光器产生脉冲光的新方法

• 批准号: 389193326
• 负责人: Privatdozent Dr. Stefan Breuer
• 金额: --
• 依托单位: Harvard School of Engineering and Applied Sciences
• 依托单位国家: 德国
• 项目类别: Research Grants
• 财政年份: 2018
• 资助国家: 德国
• 起止时间: 2017-12-31 至 2022-12-31
• 项目状态: 已结题
• 来源: https://gepris.dfg.de/gepris/projekt/389193326?language=en
• 关键词: New; approaches; pulsed; light; generation

Scientific goal of this proposal is the first experimental demonstration of ultra-stable pulsed multiwavelength emission generated by micro-lasers based on tailored semiconductor quantum dots. These novel lasers feature top-level spectral properties and are characterized by their unique ultrafast carrier dynamics. At first, it is necessary to develop new numeric and analytic methods and build solid foundations to describe the generation of ultrashort optical pulses. The experimental demonstration and characterization of novel quantum dot based pulsed lasers, including micro-ring and micro-disc lasers, is the focus of this proposal together with investigations of edge-emitting quantum dot lasers and their nonlinear emission characteristics. New concepts of selective doping of the laser-active zone during sample growth as well as the specific spectral broadening of the quantum dot gain spectra will be investigated. Furthermore, comprehensive characterizations of the frequency and amplitude stability of the generated optical pulse trains will be considered, also subject to delayed optical and electronic feedback schemes with the aim to enhance the understanding and the unique potential of semiconductor quantum dot based wavelength-versatile micro-ring and micro-disc lasers as a new generation of ultra-compact semiconductor quantum dot laser.

该提案的科学目标是基于量身定制的半导体量子点产生的超稳定脉冲多波长发射的实验证明。这些新型激光具有顶级光谱特性，其特征是它们独特的超快载体动力学。首先，有必要开发新的数字和分析方法并建立固体基础来描述超短光脉冲的产生。新型基于量子点的脉冲激光器（包括微环和微碟激光器）的实验演示和表征是该建议的重点，以及对边缘发射量子点激光器及其非线性发射特性的研究。样品生长过程中激光区的选择性掺杂以及量子点增益光谱的特定光谱扩大的新概念将得到研究。此外，还将考虑对生成的光脉冲列车的频率和振幅稳定性的全面表征，也需要延迟的光学和电子反馈方案，旨在增强基于半导体量子点的理解和独特的潜在，基于new Gerational ost fars量。