STTR Phase I: Novel Holographic Wavefront Sensing Device Enabling Light Weight, Low Cost, Fast Adaptive Optics Systems

STTR 第一阶段：新型全息波前传感设备，实现轻量、低成本、快速自适应光学系统

• 批准号: 0712256
• 负责人: Peter Roos
• 金额: --
• 依托单位: Bridger Photonics, INC
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2007
• 资助国家: 美国
• 起止时间: 2007-07-01 至 2008-06-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0712256&HistoricalAwards=false
• 关键词: STTR; Phase; Novel; Holographic; Wavefront

This Small Business Technology Transfer (STTR) Phase I project will determine the feasibility of a novel holographic wave front sensing device. The advantage of this modal holographic wave front sensor is that it optically processes the incoming wave front, automatically generating the coefficients for the feedback signal. This is in contrast to other approaches, which rely on conventional computers to perform the processor intensive wave front expansions before feedback. By using holographic optical processing, the wave front sensor can be made to operate on a much faster time scale allowing for device operation in regimes of heavy turbulence or in extremely high resolution, large aperture systems. Other advantages include reduced size, complexity, and cost of the overall wave front device, allowing for more sensors, actuators and larger closed loop bandwidths for a given fixed budget. The technical work plan includes performance analysis of a multi-channel wave front sensing device, actual testing and measurements on a multi-channel device, examination of the major issues and barriers to practicality, and a full system device design and feasibility study.There are a variety of applications that would benefit from extremely fast, highly complex (i.e. a large number of sensors and actuators) adaptive optics systems. Scientific and government applications include imaging satellites and spacecraft through turbulent atmospheres as well as compensating atmospheric turbulence in astronomical imaging. There has also been substantial interest in adaptive optics for the projection of laser beams through the atmosphere, providing highly focused spots on targets several hundreds of kilometers away. Similar applications, both beaming and imaging, can be envisioned through highly turbulent flows. In each of these major application areas, there is a push towards larger aperture or sparse aperture systems to increase both the light gathering capability and the resolving power of the system. Ultimately, there is a large need for faster adaptive optics systems that are capable of driving hundreds to thousands of actuators at very high closed loop bandwidths. This proposal will enhance scientific knowledge on holographic optical processing and how such technology can be used to create such an applicable, reduced complexity, low cost adaptive optics systems.

这个小企业技术转让（STTR）第一阶段项目将确定一种新型全息波前传感设备的可行性。这种模式全息波前传感器的优点是它对入射波前进行光学处理，自动生成反馈信号的系数。这与其他方法相反，其他方法依赖于传统计算机在反馈之前执行处理器密集型波前扩展。通过使用全息光学处理，可以使波前传感器在快得多的时间尺度上操作，从而允许设备在重湍流状态或极高分辨率、大孔径系统中操作。其他优点包括减小整个波前装置的尺寸、复杂性和成本，允许对于给定的固定预算有更多的传感器、致动器和更大的闭环带宽。技术工作计划包括多通道波前传感设备的性能分析、多通道设备的实际测试和测量、主要问题和实用性障碍的检查以及完整的系统设备设计和可行性研究。有各种各样的应用将受益于极快、高度复杂（即大量的传感器和执行器）的自适应光学系统。科学和政府应用包括通过湍流大气对卫星和航天器进行成像，以及在天文成像中补偿大气湍流。自适应光学技术也引起了人们极大的兴趣，它可以将激光束投射到大气层中，在几百公里外的目标上提供高度聚焦的光斑。类似的应用，无论是光束和成像，可以设想通过高度湍流。在这些主要应用领域中的每一个中，都存在对更大孔径或稀疏孔径系统的推动，以增加系统的光聚集能力和分辨率。最终，存在对能够以非常高的闭环带宽驱动数百至数千个致动器的更快的自适应光学系统的巨大需求。该建议将增强全息光学处理的科学知识，以及如何使用这种技术来创建这样一个适用的，降低复杂性，低成本的自适应光学系统。