Dynamic Adaptive Pumping of Liquid Crystal Lasers: Low Cost Tuneable Lasers for Biomedical Imaging, Security and Telecommunications

该项目的主题是“液晶（LC）激光器的动态自适应泵浦”，旨在研究其在生物医学成像、电信和安全领域作为低成本可调谐激光器的能力。由于液晶的固有特性，LC激光器对外部刺激有反应，并且易于调谐。根据所选择的有机染料，输出的波长可以在450- 850nm范围内调谐。低成本、大规模制造的可能性、微尺度尺寸和宽波长可调谐范围的结合可以使LC激光器取代这些行业中更昂贵的激光系统。该项目将探索重复率的限制，从而达到LC激光器的最高平均功率，以确定其商业可行性。本文将探讨几种改进上述系统的方法，包括将直线运动结合到旋转盘方法中，以及使用微机电（MEMS）反射镜来控制泵光束。

The topic of the project is "Dynamic Adaptive Pumping of Liquid Crystal (LC) Lasers" with the aim to research their capabilities to be used as low-cost tuneable lasers in biomedical imaging, telecommunications, and security. Due to the intrinsic characteristics of liquid crystals, LC lasers react to external stimuli and are easily tuneable. The wavelength of the output can be tuned in the range 450-850 nm depending on the chosen organic dye. The combination of the low cost, the possibility for mass manufacture, microscale size, and broad wavelength tuneability range could enable LC lasers to replace more expensive laser systems in these industries. This project will explore the limitations of repetition rate and consequently the highest achievable average power of LC lasers, to determine their commercial viability. Several approaches to improve aforementioned aspects of the system will be explored, including incorporation of linear motion to the spinning disk approach, and use of micro-electro-mechanical (MEMS) mirrors for steering the pump beam.