SBIR Phase I: A novel AR on LBO

SBIR 第一阶段：杠杆收购上的新型 AR

• 批准号: 1840843
• 负责人: Hanna Cai
• 金额: $ 22.47万
• 依托单位: Gamdan Optics, Inc
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2019
• 资助国家: 美国
• 起止时间: 2019-02-01 至 2021-01-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1840843&HistoricalAwards=false
• 关键词: SBIR; Phase; novel; AR; LBO

The broader impact/commercial potential of this Small Business Innovation Research (SBIR) Phase I project is as diverse as the laser technology itself. Lasers have become the true facilitator of the data-based society. It is tool of choice for future smart factories and on-demand manufacturing. It serves as the fundamental building block of optical sensing systems used to collect large volumes of critical data to be used for decision making in every facet of society. The myriad of new applications for laser systems echoes the same demand ? higher power. The bottleneck in the power generation is often the capability of optical components of the laser to withstand the power without degradation. So the greater potential of lasers can be unleashed if there would be a way to break through the power handling capability of laser components starting with the nonlinear optical crystals indispensable in creating these powerful energy sources. This research project is precisely designed to address this need and the successful completion of this project would enable the next generation of miniaturized electronic devices, expand our horizon of biological imagery and precision surgery, and explore our universe with instruments that are currently confined to our laboratories.The proposed project targets the most common material used to generate high power visible and UV light ? Lithium Triborate (LBO) crystal. Able to handle power density up to 45GW/cm2, LBO is currently the material of choice for high energy industrial lasers. However, optical surfaces where the light enter and exit LBO often get damaged well before the actual bulk material. Traditional dielectric anti-reflective (AR) coatings on these surfaces are typically made using a limited selection of materials of lower damage threshold in a process highly susceptible to contamination, resulting in significantly lower damage threshold than the bulk LBO crystal. In this proposal, state-of-the-art surface-texturing processes on LBO will be developed to eliminate the use of these dielectric films while still providing the necessary AR functionality. A variety of processes and materials on LBO surfaces will be attempted and studied with resulting surfaces tested for absorption and damage threshold.This award reflects NSF's statutory mission and has been deemed worthy of support through evaluation using the Foundation's intellectual merit and broader impacts review criteria.

这个小型企业创新研究（SBIR）第一阶段项目的更广泛的影响/商业潜力与激光技术本身一样多样化。 激光已经成为数据社会的真正推动者。 它是未来智能工厂和按需制造的首选工具。 它是光学传感系统的基本组成部分，用于收集大量关键数据，用于社会各个方面的决策。 激光系统的无数新应用反映了同样的需求？更高的权力。 功率产生的瓶颈通常是激光器的光学部件承受功率而不退化的能力。 因此，如果有一种方法可以突破激光元件的功率处理能力，那么激光器的更大潜力就可以被释放出来，首先是创造这些强大能源所不可或缺的非线性光学晶体。 这个研究项目正是为了满足这一需求而设计的，这个项目的成功完成将使下一代小型化电子设备成为可能，扩大我们在生物成像和精密手术方面的视野，并利用目前仅限于实验室的仪器探索我们的宇宙。拟议的项目针对的是用于产生高功率可见光和紫外光的最常见材料？三硼酸锂晶体。 LBO能够处理高达45 GW/cm 2的功率密度，是目前高能工业激光器的首选材料。 然而，光进入和离开LBO的光学表面通常在实际的大块材料之前就损坏了。 这些表面上的传统介电抗反射（AR）涂层通常在高度易受污染的工艺中使用具有较低损伤阈值的有限选择的材料制成，从而导致比块体LBO晶体显著更低的损伤阈值。 在该提案中，将开发LBO上最先进的表面纹理工艺，以消除这些介电膜的使用，同时仍然提供必要的AR功能。 LBO表面上的各种工艺和材料将被尝试和研究，并对所得表面进行吸收和损伤阈值测试。该奖项反映了NSF的法定使命，并通过使用基金会的知识价值和更广泛的影响审查标准进行评估，被认为值得支持。