Holographic Optical Coherence Laser Ranging in Turbid Media

浑浊介质中的全息光学相干激光测距

• 批准号: 0401858
• 负责人: David Nolte
• 金额: --
• 依托单位: Purdue University
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2004
• 资助国家: 美国
• 起止时间: 2004-09-15 至 2009-01-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0401858&HistoricalAwards=false
• 关键词: Holographic; Optical; Coherence; Laser; Ranging

0401858NolteA full-frame coherence imaging technique is proposed that uses a holographic coherence gate and CCD camera. The coherence gate is a transient grating formed by interference between the appropriately delayed reference beam and the image-bearing light from the sample. Preliminary work shows imaging of tumor masses with this technique. The group has been using custom in-house photorefractive films for the coherence gate, and proposes use of outside vendors for improved film properties. OCI has several attributes that distinguish it from OCT and make it an attractive alternative imaging technique. The PI has pioneered this new technology. This proposal will extend that early work, introducing improvements in dynamic range and speed that will allow a shift of research thrust to the imaging aspects of the technology.

提出了一种使用全息相干门和CCD相机的全帧相干成像技术。相干门是由适当延迟的参考光束和来自样品的承载图像的光之间的干涉形成的瞬态光栅。初步工作显示了这种技术对肿瘤块的成像。该小组一直在使用定制的内部光折变薄膜的相干门，并建议使用外部供应商，以改善薄膜性能。OCI有几个区别于OCT的属性，使其成为一种有吸引力的替代成像技术。PI是这项新技术的先驱。该提案将扩展早期的工作，引入动态范围和速度的改进，这将使研究重点转向该技术的成像方面。