自旋轨道光学宽带消色差空间分辨成像

IF 8.4 1区 物理与天体物理 Q1 OPTICS
Optica Pub Date : 2024-06-24 DOI:10.1364/optica.524984
Hongwei Yang, Weichao Xie, Huifeng Chen, Mengyuan Xie, Jieyuan Tang, Huadan Zheng, Yongchun Zhong, Jianhui Yu, Zhe Chen, Wenguo Zhu
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引用次数: 0

摘要

空间光学模拟分辨技术可实现超高速、低功耗的图像处理,以及透明生物物体的无标记成像。宽带和非相干光源的光学模拟分辨因其多通道和多任务信息处理以及高质量的分辨成像而备受青睐。目前,宽带和非相干光分辨仍具有挑战性。在此,我们展示了一种基于天然薄晶体固有自旋轨道耦合的紧凑型宽带消色差光学空间分辨器。通过在传统显微镜的摄像头前插入一个单轴晶体,自旋到轨道的转换将在图像场中嵌入一个光学漩涡,并对该场进行二阶拓扑空间分异,从而使摄像头捕捉到各向同性的差分图像。本征自旋轨道耦合效应与波长无关的特性使我们能够实现宽带模拟计算和消色差空间成像。利用这种分化成像方法,可以高对比度地检测到振幅和纯相位物体。在边缘检测模式和边缘增强模式下,透明活细胞和生物组织的边缘轮廓和细胞内细节分别得到了成像。这些发现为利用宽带非相干光源进行光学模拟计算铺平了道路,同时也推动了高性能、高性价比相衬成像技术的发展。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Spin–orbit optical broadband achromatic spatial differentiation imaging
Spatial optical analog differentiation allows ultrahigh-speed and low-power-consumption of image processing, as well as label-free imaging of transparent biological objects. Optical analog differentiation with broadband and incoherent sources is appealing for its multi-channels and multi-task information processing, as well as the high-quality differentiation imaging. Currently, broadband and incoherent optical differentiation is still challenging. Here, a compact and broadband achromatic optical spatial differentiator is demonstrated based on the intrinsic spin–orbit coupling in a natural thin crystal. By inserting a uniaxial crystal just before the camera of a conventional microscope, the spin to orbit conversion will embed an optical vortex to the image field and make a second-order topological spatial differentiation to the field, thus an isotropic differential image will be captured by the camera. The wavelength-independent property of the intrinsic spin–orbit coupling effect allows us to achieve broadband analog computing and achromatic spatial differentiation imaging. With this differentiation imaging method, both amplitude and pure phase objects are detected with high contrast. Transparent living cells and biological tissues are imaged with their edge contours and intracellular details protruded in the edge detection mode and edge enhancement mode, respectively. These findings pave the way for optical analog computing with broadband incoherent light sources and concurrently drive the advancement of high-performance and cost-effective phase contrast imaging.
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来源期刊
Optica
Optica OPTICS-
CiteScore
19.70
自引率
2.90%
发文量
191
审稿时长
2 months
期刊介绍: Optica is an open access, online-only journal published monthly by Optica Publishing Group. It is dedicated to the rapid dissemination of high-impact peer-reviewed research in the field of optics and photonics. The journal provides a forum for theoretical or experimental, fundamental or applied research to be swiftly accessed by the international community. Optica is abstracted and indexed in Chemical Abstracts Service, Current Contents/Physical, Chemical & Earth Sciences, and Science Citation Index Expanded.
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