单片集成锁模量子点激光器

Monolithic Mode-Locked Quantum-Dot Lasers

首先简要回顾了超短脉冲激光器(LD)的发展史,以及以半导体量子点为有源区的锁模量子点LD的提出及其潜在的、重要应用前景。随后介绍了锁模量子点LD的工作原理、各种锁模方式及其器件结构,进而讨论了量子点作为锁模LD有源区材料所具有的独特优势。最后在介绍锁模量子点激光器已取得的主要研究成果和发展趋势的同时,指出要获得高重复频率、高功率的锁模量子点激光飞秒脉冲,还须进一步对量子点有源区、器件结构和锁模偏置条件等要素进行优化。

The development history of ultrashort pulse lasers,especially the mode-locked lasers with semiconductor quantum-dot （QD） active region and their potential important applications are briefly introduced first. Then the operating principle,various mode lockings and structures of the mode-locked quantum-dot LD are introduced,and the unique advantages of QDs as active region materials of the mode-locked LD are discussed. Finally,the latest achievement and progress trend of the mode-locked quantum-dot lasers are introduced. In order to achieve high repetition rate and high power femtosecond pulse,the QD active region,the device structure and bias conditions of mode-locking must be optimized.