Tunable laser source in the 6-10 um by difference frequency generation in BRW and QPM AIGaAs

该项目涉及多伦多大学和Genia Photonics之间的合作伙伴关系，开发非线性频率混合设备，利用非线性光学效应进入6-10 μ m的中红外光谱范围。所提出的装置是基于近红外脉冲激光器的差频混合，Genia已经开发出用于产生中红外光。两种独立的技术将同时进行研究，只有一种解决方案将被选为首选平台。第一项技术是基于相位匹配AlGaAs Bragg反射波导的差频混合，该技术最初是由多伦多大学的研究小组在2006年提出的，并且从那时起就被证明是成功的。第二种技术使用准相位匹配的AlGaAs波导，这是由多伦多大学和格拉斯哥大学共同开发的。利用布拉格反射波导和准相位匹配器件，在6-10 μ m光谱范围内的几百纳米范围内实现了宽波长可调性。

This project involves a partnership between the University of Toronto and Genia Photonics to develop nonlinear frequency mixing devices to access the mid-infrared spectral range between 6-10 µm using nonlinear optical effects. The proposed devices are based on difference-frequency mixing of near-infrared pulsed lasers already developed by Genia to generate mid-infrared light. Two separate technologies will be investigated side by side and only one solution will be chosen as the preferred platform. The first technology is based on difference-frequency mixing in phase-matched AlGaAs Bragg reflection waveguides which has been initially proposed by the group at the University of Toronto in 2006 and has been proven successful since then. The second technology uses quasi-phase-matched AlGaAs waveguides which was developed between the University of Toronto and Glasgow University. Wide wavelength tunablity in range of few hundreds of nanometers within 6-10 µm spectral range is sought using both Bragg reflection waveguides and quasi-phase-matched devices.