【搜狐号】「学术之路」· 报名 | 左超:Transport-of-intensity equation280
清华大学研究生 “学术之路”系列学术论坛活动以 “探究学术前沿,激发学术兴趣,提升学术能力,启迪学术人生”为口号,通过讲座等一系列丰富多彩的活动,邀请中青年教师和优秀朋辈与清华学子面对面,打造专家学者与清华学子充分交流的广阔平台,以更好地满足研究生学术需求、提升研究生学术素质,从而营造清华大学良好的研究生学术氛围。本次“学术之路”,我们邀请到南京理工大学电子工程与光电技术学院教授、博士生导师左超老师为我们介绍“Transport-of-intensity equation: A tutorial”。 报告人
讲座内容简介 When it comes to "phase measurement" or "quantitative phase imaging", many people will automatically connect them with "laser" and "interferometry". Indeed, conventional quantitative phase imaging and phase measurement techniques generally rely on the superposition of two beams with a high degree of coherence: complex interferometric configurations, stringent requirements on the environmental stabilities, and associated laser speckle noise severely limit their applications in optical imaging and microscopy. On a different note, as one of the most well-known phase retrieval approaches, the transport of intensity equation (TIE) provides a new non-interferometric way to access quantitative phase information through intensity only measurement. Despite the insufficiency for interferometry, TIE is applicable under partially coherent illuminations (like the Kohler's illumination in a conventional microscope), permitting optimum spatial resolution, higher signal-to-noise ratio, and better image quality. In this talk, we provide an overview of the basic principle, research fields, and representative applications of TIE, focusing particularly on optical imaging, metrology, and microscopy. These results highlight a new era in which strict coherence and interferometry are no longer prerequisites for quantitative phase imaging and diffraction tomography, paving the way toward new generation label-free three-dimensional microscopy, with applications in all branches of biomedicine. 「精仪教师学术分享会」是清华大学精密仪器系研究生会推出的学术系列活动,该活动以邀请优秀教师与学术大牛进行科研讲座的形式,致力于开拓同学们学术视野,促进师生间的学术交流。教师分享会计划邀请不同学科背景的优秀教师来为同学们分享科研成果及经验,促进同学们科研素养的提高、培养高层次复合型人才。 欢迎大家积极参加本次『学术之路』——精仪教师学术分享会活动,我们也将继续努力为大家带来更多高质量的线上线下学术交流活动!若您有任何关于科研学术或行业经验分享的意愿,欢迎通过“精仪系研究生”微信公众号或邮箱jyxyjs@mail.tsinghua.edu.cn与我们进行联系,我们将努力为您提供更广阔的交流平台! 主办 清华大学研究生会 IEEE清华大学学生分会 承办 共青团清华大学精密仪器系研究生总支部 清华大学精密仪器系研究生分会 供稿丨精仪系研究生分会 |