中国激光, 2020, 47 (7): 0701004, 网络出版: 2020-07-10
胶质量子点激光器及片上集成 下载: 1435次特邀综述
Colloidal Quantum Dot Lasers and On-Chip Integration
激光器 胶质量子点 谐振腔 自组装 微纳激光器 片上集成 lasers colloidal quantum dots resonators self-assembly micro/nanoscale lasers on-chip integration
摘要
胶质量子点作为一种半导体纳米晶体,具有量子产率高(约为100%)、辐射波长可调、性质稳定、折射率较高、可溶液处理和制作成本低廉等优点,被广泛用作微纳激光器的增益材料。基于胶质量子点的纳米尺寸(2~20 nm)和可溶液处理的性质,胶质量子点可以通过自组装的方式密集堆积形成高折射率微纳结构。为此,从胶质量子点激光器谐振腔的制备方面,总结了三类常见的胶质量子点微纳激光器,并对各自的特点进行了详细的分析。此外,还介绍了胶质量子点激光器与波导的片上集成,并着重介绍了模板辅助填充法这一集成方法。最后对胶质量子点激光器及片上集成在集成光子回路领域的发展进行了展望。
Abstract
As semiconductor nanocrystals, colloidal quantum dots (CQDs) are widely used as gain materials for micro/nanoscale lasers owing to their advantages of high quantum yields (~100%), tunable emission wavelengths, excellent stability, high refractive index, solution processability, and low-cost synthesis. Based on nanoscale sizes (2--20 nm) and solution processability, CQDs can construct high refractive index micro/nanoscale structures through self-assembly methods. Here, three kinds of CQD micro/nanoscale lasers are summarized based on manufacturing methods of CQD resonators, and their characteristics are discussed in details. In addition, the on-chip integrations of CQD lasers and waveguides are also introduced. Finally, the outlook for the development of CQD lasers and its on-chip integration in photonic integrated circuits (PICs) is provided.
刘慧, 龚旗煌, 陈建军. 胶质量子点激光器及片上集成[J]. 中国激光, 2020, 47(7): 0701004. Liu Hui, Gong Qihuang, Chen Jianjun. Colloidal Quantum Dot Lasers and On-Chip Integration[J]. Chinese Journal of Lasers, 2020, 47(7): 0701004.