Acquire a picosecond ultrafast laser for an advanced ultrafast photocurrent spectroscopy

当光电子器件工作时，具有独特的光谱来研究具有超快时间分辨率的在位光电子器件中的载流子动力学仍然是一个巨大的挑战。这些器件包括太阳能电池、光导体、LED等。对载流子动力学的基础了解不仅是物理、化学和材料科学基础领域的中心话题，而且对光子学、光电子学、光量子通信等领域也有深远的影响。例如，对电荷载流子动力学的基础了解将导致高效低成本的光伏、低噪声和灵敏的单光子探测等新一代技术的发展。因此，我的长期愿景是了解先进材料中的电荷载流子动力学，导致新一代器件在可再生能源和光量子通信中的应用。在过去的五年里，我的前一个团队通过开发具有最先进的超快时间分辨率的变革性超快光电流光谱(UPCS)来应对上述挑战。使用这一先进的UPCS，不同的HQP群体，包括我之前的小组中的5名博士、1名硕士和10名本科生，在钙钛矿材料和新型器件开发方面做出了重大贡献。HQP在《自然通讯》、《JACS》、《Matter》、《JPCL》、《ACS Photonics》和《HQP在一流大学和工业公司的职业生涯》上发表的文章证明了这些成就。UPCS包括三个组件：高速光电子器件、高带宽采样示波器和超快激光器。虽然高速光电子器件的制造设备是由我的创业基金支持的，而且我目前的实验室已经配备了高带宽采样示波器，但在布罗克大学，目前没有超快激光器可用于开发UPCS。在这份提案中，申请的资金是购买一台皮秒超快激光器，以继续我的研究计划。每年，9-11 HQP都会在我的实验室接受培训，所要求的超快激光是基础的。因此，超快激光对我的研究计划和HQP项目的及时完成至关重要。所需设备：RPMC激光公司生产的天狼星皮秒超快激光器

It remains a significant challenge to have a unique spectroscopy that can study the charge carrier dynamics in in-situ optoelectronic devices with an ultrafast time resolution when optoelectronic devices are at work. Those devices include solar cells, photoconductors, LEDs, etc. The fundamental understanding of charge carrier dynamics not only is a central topic in basic fields in physics, chemistry, and materials science, but also it has a profound impact in photonics, optoelectronics, optical quantum communication, etc. For instance, the fundamental dynamics understanding will lead to the development of a new generation of technologies such as highly efficient and low-cost photovoltaics, and low-noise and sensitive single-photon detection. Thus, my long-term vision is to understand the charge carrier dynamics in advanced materials, leading to a new generation of device application in renewable energy and optical quantum communication. For the past five years, my previous group has addressed above challenge by developing a transformative ultrafast photocurrent spectroscopy (UPCS) with a state-of-the-art ultrafast time resolution. Using this advanced UPCS, a diverse HQP population including five PhDs, one MSc, and ten undergraduate students in my previous group have made significant contributions in perovskite materials and novel device development. Those achievements have been demonstrated by HQP's publications in Nature Communications, JACS, Matter, JPCL, ACS Photonics, and HQP's career at top-ranking universities and industrial companies. The UPCS includes three components: high-speed optoelectronic devices, a high bandwidth sampling oscilloscope, and an ultrafast laser. While the fabrication equipment of high-speed optoelectronic devices is supported by my start-up fund, and my current lab has already been equipped with a high bandwidth sampling oscilloscope, however, at Brock University currently there is no ultrafast laser available to develop the UPCS. In this proposal, the requested fund is to acquire a picosecond ultrafast laser to continue my research programs. Each year, 9-11 HQP will be receiving training in my lab, and the ultrafast laser requested is foundational. Thus, the ultrafast laser is essential for my research program and for the timely completion of HQP projects. EQUIPMENT REQUESTED: SIRIUS picosecond ultrafast laser from RPMC Lasers, Inc