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一、前言半导体激光器自1970年实现室温连续工作以来,作为光纤通信用光源,进行过大量的研究、改良工作,至今不仅已应用于视频磁盘、DAD、激光复印机等民用机器,还发展成为光信息处理用光源。无论对于大信息容量光通信,还是对于超高速信号处理来说,半导体激光器都具备高性能与长寿命,优于其他激光器。尽管目前已开发成功的固体激光和染料激光装置可以产生Ps、fs(10~(-15)秒)光脉冲,最高水准为8fs。但这些装置系统庞大、调整困难、成本又高,不能适应日益发展的信息化要求,作为Ps激光脉冲源,要求小型、轻便、廉价并且可以集成化。因此,半导体激光器是最适合、最有竞争力的微微秒激光脉冲源。
I. INTRODUCTION Since semiconductor laser has been continuously working at room temperature since 1970, as a light source for optical fiber communication, a great deal of research and improvement work have been done so far. It has not only been applied to civil machines such as video disk, DAD, laser copiers, but also to optical information Processing light source. Semiconductor lasers are superior to other lasers in terms of high performance and long life, both for large-capacity optical communications and ultra-high-speed signal processing. Although the successful development of solid-state laser and dye laser devices can produce Ps, fs (10 ~ (-15) s) light pulse, the highest level of 8fs. However, these devices are bulky, difficult to adjust and costly, and can not meet the requirements of increasingly developed information. As a Ps laser pulse source, these devices are small, lightweight, inexpensive and can be integrated. Therefore, semiconductor lasers are the most suitable and the most competitive pico-second laser pulse sources.