Copy of Integrated self-pumped optical frequency conversion and generation in semiconductor waveguides

该项目提案解决了近红外和中红外波长区域对低成本，紧凑和灵活的光源的新兴需求，特别是由于对传感应用的需求日益增加，例如环境，临床分析，生命科学，食品监测，制药，安全和法医学。这里介绍的频率转换方法的主要优点是，要生成的波长在晶片生长阶段不是固定的，而是由生长后处理中的光刻确定的。因此，设想几个器件是可行的，每个器件具有适度的可调谐性，单片集成在单个半导体芯片上。这项研究建立在我们已经在半导体非线性光学，半导体环形激光器和III-V集成技术方面拥有广泛记录的关键技术基础上。与大型和昂贵的台式系统相比，红外光源的小型化将通过在高精细度半导体环形激光器腔内制造频率转换元件来实现。

This project proposal addresses an emerging demand for lowcost, compact and flexible optical sources in the near- and mid-infrared wavelength regions due particularly to increasing need for sensing applications, e.g. environmental, clinical analysis, life sciences, food monitoring, pharmaceutical, security and forensics. The principal advantage of the frequency conversion approach introduced here is that the wavelength to be generated is not fixed at the wafer growth stage, but is instead determined by lithography in the post-growth processing. As such it is feasible to conceive of several devices, each with modest tunability, monolithically integrated on a single semiconductor chip. This research builds on key technologies where we already have an extensive track record in semiconductor nonlinear optics, semiconductor ring lasers and III-V integration technologies. The minaturisation of infrared optical sources, in comparison to large and expensive desktop systems, will be enabled by fabricating the frequency conversion element within a high finesse semiconductor ring laser cavity.