Holographic Optical Coherence Laser Ranging in Turbid Media

0401858否提出了一种使用全息相干门和CCD摄像机的全帧相干成像技术。相干门是由适当延迟的参照光和来自样品的图像光之间的干涉形成的瞬时光栅。初步工作显示了用这项技术对肿瘤肿块进行成像。该组织一直在使用定制的内部光折变薄膜作为相干门，并建议使用外部供应商来改善薄膜性能。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。这项提议将扩展早期的工作，在动态范围和速度方面引入改进，允许将研究重点转移到该技术的成像方面。

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.