"A commercially viable platform for monolithic, parametric and quantum photonic integrated circuits"

半导体激光芯片光源是目前最具吸引力的相干光源。这是由于它们相对坚固、高效、价格合理和体积小。半导体激光器被广泛应用于从消费电子到光动力治疗的各个领域。半导体激光器发出的辐射的颜色是由制造它们的材料（材料带隙）决定的。然而，可以用于半导体中产生红外激光辐射的合适材料是有限的。将这些激光器与频率混合元件结合使用，可以为传统的二极管激光器提供替代源。这种新型光源目前还不存在，它将以芯片形式存在，不需要校准，并且像电子电路一样被电注入。在该项目中开发的技术将使这些新型激光器首次实现在没有电流源的光谱区域提供相干辐射，使用商业上可行的平台。与其他来源相比，这种辐射将大大可调谐，并且不需要校准。这些来源将为许多应用提供突破，包括传感，例如环境，临床分析，生命科学，食品监测，制药，安全和法医学，在这些领域它们发挥着关键作用。

Semiconductor laser chip sources are the most attractive coherent light sources available. This is due to their relative ruggedness, efficiency, affordable cost and small size. Semiconductor lasers are employed in a vast spectrum of applications from consumer electronics to photodynamic therapy. The color of radiation emitted by semiconductor lasers is governed by the material (the material bandgap) from which they are made. However, there is a limited set of suitable materials, which can be used in generating infrared laser radiation in semiconductors. Using those lasers in conjunction with frequency mixing elements can provide an alternative source to the conventional diode lasers. This novel source does not currently exist, would be in chip form, requires no alignment, and is electrically injected like electronic circuits. The technology that will be developed in this program will enable the realization of these novel lasers for the first time to provide coherent radiation in regions of the spectrum where no current sources exist using a commercially viable platform. The radiation will be vastly tuneable in comparison to other sources and is alignment free. These sources will provide a breakthrough for numerous applications including sensing, e.g. environmental, clinical analysis, life sciences, food monitoring, pharmaceutical, security and forensics, where they play a pivotal role.