STTR Phase I: Feasibility Study of Chip-Scale Iodine Vapor Cell Fabrication

这个小型企业技术转让(STTR)第一阶段项目的更广泛的影响/商业潜力是改善测量科学。目前，被称为“蒸汽室”的特殊低压腔是在精选数量的精密玻璃吹制车间中手工制造的，存在尺寸重复性差、生产能力低、尺寸不规则以及蒸气成分可变等问题，导致市场上存在多方面的限制。目前市场上的光学基准频率源体积大、成本高、耗电量大，但在工业计量市场的各种商业机会中都得到了应用。这项研究旨在生产一种适合大规模生产微型蒸气电池的可重复使用的配方。这项研究的结果将导致可扩展的参考材料的生产，这些参考材料将在本质上值得信赖，并在许多年内以连续的方式良好地运行。STTR第一阶段项目将利用玻璃和硅的微加工来实现一种传统手工组件的新制造方法：玻璃吹制蒸汽室。这项研究的目的是测试这种方法是否可以生产出紧凑和可重复使用的蒸汽池。研究将使用半导体加工技术和光学频率计量来推断这些气室的长期稳定性和准确性，以评估它们作为光学频率基准的适用性。这项研究的预期技术成果包括一条适合于光学时钟、干涉仪和波长计的大规模生产光学频率标准的潜在途径。这种技术将为高性能光学测量设备中的精确测量科学奠定基础。该奖项反映了NSF的法定使命，并通过使用基金会的智力优势和更广泛的影响审查标准进行评估，被认为值得支持。

The broader impact/commercial potential of this Small Business Technology Transfer (STTR) Phase I project is to improve measurement science. Currently, special low-pressure chambers known as "vapor cells" are made by hand in a select number of precision glassblowing shops and suffer from poor dimensional reproducibility, low production capacity, irregular sizes, and variable vapor composition leading to a multifaceted limitation in the marketplace. Optical frequency references on the market today are large, costly, and power-hungry, but are used in a variety of commercial opportunities throughout industrial metrology markets. This study aims to produce a repeatable recipe suitable for high-volume production of miniature vapor cells. The results of this study will lead to the scalable production of references that would be intrinsically trustworthy and perform well in a continuous manner over many years.This STTR Phase I project will leverage micromachining of glass and silicon to enable a new fabrication method for a traditionally handmade component: a glass-blown vapor cell. The research objective of this study is to test if such a method can yield a compact and reproducible vapor cell. Research will employ semiconductor processing techniques and optical frequency metrology to deduce the long-term stability and accuracy of these vapor cells in order to assess their suitability as optical frequency references. The anticipated technical results of this study include a potential pathway to a mass-produced optical frequency standard suitable for optical clocks, interferometers, and wavemeters. Such a technology would underpin accurate measurement science in high-performance optical measurement equipment.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.