Article
Physics, Multidisciplinary
Xuewei Deng, Xiaoxia Huang, Deen Wang, Ying Yang, Xin Zhang, Dongxia Hu
Summary: A method for retrieving a beam wavefront from its near-field intensity distribution after a 4f system by inserting a benchmark at the Fourier plane has been proposed. The separation between the focus of any sub-aperture and the benchmark can be determined to reconstruct the beam wavefront through a convolution of the mark-blocked spatial frequency component and the original optical field with the 4f system. Theoretical and experimental studies have demonstrated the validity of this method, which has potential applications in real-time wavefront sensing.
MATTER AND RADIATION AT EXTREMES
(2021)
Article
Optics
Andrey Yudaev, Alexander Kiselev, Inna Shashkova, Alexander Tavrov, Alexander Lipatov, Oleg Korablev
Summary: We implemented a common-path achromatic interfero-coronagraph for stellar coronagraphy, based on a nulling rotational-shear interferometer. The small angular shear of about 10 deg is chosen to minimize the stellar leakage effect. We conducted a study on phase and amplitude wavefront control using a liquid crystal spatial light modulator, which serves as the adaptive optics unit for direct exoplanet imaging.
Article
Optics
Yonglei Liu, Yahong Chen, Fei Wang, Yangjian Cai, Chunhao Liang, Olga Korotkova
Summary: This study explores the impact of the coherence function on information transmission in a light field, revealing a new degree of freedom for information transfer. By studying the unique propagation characteristics of partially coherent beams, a novel method for far-field imaging in turbulent media is proposed, with advantages of confidentiality and turbulence resistance.
OPTO-ELECTRONIC ADVANCES
(2021)
Article
Chemistry, Multidisciplinary
Linzhi Yu, Dahai Li, Yilang Ruan, Xinwei Zhang, Ruiyang Wang, Kaiyuan Xu
Summary: This paper proposes a method called wavefront aberration measurement deflectometry (WAMD) for testing the aberrations of imaging lenses. The principle of WAMD is analyzed in detail and its correctness and feasibility are verified through simulation and experiment. The experimental results show that the method has relatively small RMS errors compared to the results of an interferometer.
APPLIED SCIENCES-BASEL
(2022)
Article
Materials Science, Multidisciplinary
Yu-Chen Zhuang, Qing-Feng Sun
Summary: The wavefront dislocation is an important and ubiquitous phenomenon in wave fields, closely related to phase singularities. Recent studies have shown that wavefront dislocations in the local density of states map can well manifest intrinsic topological characteristics in graphene and other topological systems. We propose a transport method to measure wavefront dislocations in monolayer and Bernal-stacked bilayer graphene, combining analytical analysis and numerical calculation.
Article
Optics
Cheng Xu, Hui Pang, Axiu Cao, Qiling Deng, Song Hu, Huajun Yang
Summary: In this paper, a novel lensless imaging approach based on ptychography and wavefront separation is proposed. This approach has the advantages of rapid convergence and high-quality imaging. By using an amplitude modulator to modulate the light wave, a sequence of modulated intensity images can be acquired for object recovery. Optical experiments were conducted to validate the feasibility of this approach.
Article
Optics
Yidan LI, Junhua Wang, Xintong Zhang, Kai Hu, Lu Ye, Minge Gao, Yuxiang Cao, Min Xu
Summary: This study demonstrates a deeply learned far-infrared WFC camera that extends the depth of field through optical coding and digital image processing. By optimizing the phase mask and training a generative adversarial network, the image quality and signal-to-noise ratio are significantly improved.
Article
Physics, Applied
Zaikun Zhang, Depeng Kong, Yi Geng, Hui Chen, Ruiduo Wang, Zhengshang Da, Zhengquan He
Summary: This study introduces a compact multimode fiber-based laser scanning endoscope using wavefront shaping with a liquid crystal spatial light modulator. Experimental results demonstrate the lensless imaging capability of the endoscope, achieving high-resolution and high-contrast images without mechanical scanning. The feasibility of single fiber imaging and the potential for ultra-thin micro-endoscopic imaging are confirmed in this research.
APPLIED PHYSICS EXPRESS
(2021)
Article
Optics
Jixiang Cai, Honglin Yu
Summary: This study demonstrates the complete wavefront manipulation of electromagnetic waves using an all-dielectric metasurface based on asymmetric photonic spin-orbit interactions. Two independent phase profiles in transmission and reflection spaces are achieved, and crosstalk between adjacent nanopillars is suppressed for improved efficiency. This technology has potential applications in holographic imaging, augmented reality, virtual reality, and three-dimensional imaging.
Article
Optics
Bole Ma, Chuxuan Huang, Sibing Hou, Haiyu Zhang, Manhua Liu, Hao Yan
Summary: Deep learning has shown great potential in complex wavefront retrieval, but it does not align well with the physical diffraction process. Current methods in deep learning-based complex wavefront retrieval reduce computational resources by cropping the diffraction patterns, leading to a decrease in space-bandwidth product. To address this trade-off, we propose an imaging process matched neural network (IPMnet) that takes full-size diffraction patterns as inputs and retrieves higher resolution and larger field of view of the complex wavefront.
Article
Multidisciplinary Sciences
Soongyu Yi, Jin Xiang, Ming Zhou, Zhicheng Wu, Lan Yang, Zongfu Yu
Summary: The study presents an angle-sensitive device using flat optics integrated on a focal plane array for compact wavefront sensing with improved resolution. Angle-based sensors, like the Shack-Hartmann sensor, have a long history in measuring wavefronts and are widely used in industrial applications and scientific research due to their fully integrated setup, robustness, and fast speed. The new angle-based wavefront sensor overcomes the low spatial resolution issue by using ultra-compact angle sensors, improving spatial sampling density by over two orders of magnitude and enabling high-resolution surface topography recording.
NATURE COMMUNICATIONS
(2021)
Article
Optics
Xiaosong Wu, Linhai Huang, Naiting Gu, Haoming Tian, Wenju Wei
Summary: In this study, a novel Shack-Hartmann wavefront sensor with adjustable spatial sampling (ASS-WFS) based on a spherical reference wave is proposed. By moving the microlens array and CCD detector, the sensor can achieve variable spatial sampling, thereby improving the performance of the adaptive optics system and the accuracy of wavefront reconstruction.
OPTICS AND LASERS IN ENGINEERING
(2023)
Article
Engineering, Electrical & Electronic
Lei Gao, Wenjing Zhao, Aiping Zhai, Dong Wang
Summary: In this study, we propose a method called OAM-basis spatial wavefront single-pixel imaging via compressed sensing for high-quality spatial wavefront reconstruction. We use orbital angular momentum (OAM) beams as the complex-number basis for measurement and employ the TVAL3 compressed sensing algorithm for wavefront reconstruction, which is a first-time achievement to the best of our knowledge. Simulation and experiment results show that our method outperforms the existing second-order correlation method and provides a promising technique for high-quality wavefront reconstruction based on a complex-number basis. It may have applications in optical communication, optical detection and imaging, optical information processing and encryption, and other related fields.
JOURNAL OF LIGHTWAVE TECHNOLOGY
(2023)
Article
Radiology, Nuclear Medicine & Medical Imaging
Yusi Miao, Joseph C. Jing, Lidek Chou, Zhikai Zhu, Brian J. F. Wong, Zhongping Chen
Summary: The study presents a label-free high-speed visualization technique for ciliary metachronal wave propagations in freshly-excised tracheal explants. The technique can reliably and efficiently capture the spatial distribution and function of the waves. The phase-resolved dynamic wavefront imaging (PRDWI) method offers a more distinct visualization of the direction and coordination of collective cilia movement.
QUANTITATIVE IMAGING IN MEDICINE AND SURGERY
(2023)
Article
Chemistry, Analytical
Nikita Stsepuro, Michael Kovalev, Evgenii Zlokazov, Sergey Kudryashov
Summary: Nowadays, wavefront sensors are widely used in various fields of physics to control the shape of the wavefront and detect aberrations of the complex field amplitude. However, most existing wavefront sensors can only work with quasi-monochromatic radiation. Methods and approaches for polychromatic radiation have certain restrictions. However, contemporary methods of computer and digital holography enable the implementation of holographic wavefront sensors that can operate with polychromatic radiation. This paper presents a study on the analysis and evaluation of errors in the operation of holographic wavefront sensors with such radiation.
Article
Biochemical Research Methods
Sudheesh K. Rajput, Manoj Kumar, Xiangyu Quan, Mitsuhiro Morita, Tomoyuki Furuyashiki, Yasuhiro Awatsuji, Enrique Tajahuerce, Osamu Matoba
JOURNAL OF BIOMEDICAL OPTICS
(2020)
Article
Engineering, Electrical & Electronic
Miguel Soriano-Amat, Marcelo A. Soto, Vicente Duran, Hugo F. Martins, Sonia Martin-Lopez, Miguel Gonzalez-Herraez, Maria R. Fernandez-Ruiz
JOURNAL OF LIGHTWAVE TECHNOLOGY
(2020)
Article
Optics
C. Quevedo-Galan, V Duran, A. Rosado, A. Perez-Serrano, J. M. G. Tijero, I Esquivias
Article
Optics
Miguel Soriano-Amat, Hugo F. Martins, Vicente Duran, Luis Costa, Sonia Martin-Lopez, Miguel Gonzalez-Herraez, Maria R. Fernandez-Ruiz
Summary: The phase-sensitive optical time-domain reflectometry (phi OTDR) technique provides spatio-temporal measurements of environmental variables in real time, with a novel approach achieving cm-scale spatial resolutions over 1 km at remarkably low detection bandwidths. This approach utilizes dual-comb spectrometry and random phase-spectral coding to maximize signal-to-noise ratio for sensing schemes.
LIGHT-SCIENCE & APPLICATIONS
(2021)
Article
Optics
A. Santos-Amador, M. Araiza-Esquivel, H. Gonzalez, A. Rodriguez-Cobos, E. Tajahuerce, L. Martinez-Leon, G. Ramirez-Flores, R. E. Balderas-Navarro
Summary: In this study, Hadamard, cosine, and noiselet bases are implemented in a digital holographic microscope for image retrieval, with cosine basis showing the best quality for amplitude images based on peak SNR criteria. The phase images recovered compare well with those obtained with a CMOS camera.
Article
Engineering, Electrical & Electronic
Sudheesh K. Rajput, Osamu Matoba, Manoj Kumar, Xiangyu Quan, Yasuhiro Awatsuji, Yosuke Tamada, Enrique Tajahuerce
Summary: The study presents a multimodal technique for cross-sectional quantitative phase and fluorescence imaging using computational microscopy. The hybrid imaging system is simple, compact, and non-iterative, suitable for imaging biological samples. Experimental results on microbeads and fluorescent protein-labeled living cells demonstrate the performance of the proposed system.
IEEE JOURNAL OF SELECTED TOPICS IN QUANTUM ELECTRONICS
(2021)
News Item
Optics
Vicente Duran
Summary: By utilizing a single black phosphorus photodetector with a wavelength-scale size, mid-infrared computational spectrometry is now achievable, fulfilling the critical requirement of reducing the footprint of optical spectrometers for many in-field applications.
Article
Optics
Vincent Billault, Vicente Duran, Carlos R. Fernandez-Pousa, Vincent Crozatier, Daniel Dolfi, Hugues Guillet de Chatellus
Summary: The dynamic laser ranging system offers millimeter range resolution and 20-micrometer precision, providing dynamic measurements such as phase-sensitive measurements and Doppler shift velocimetry. Furthermore, applying perfect correlation phase sequences extends the ambiguity range to 20 meters, generating quasi-continuous waveforms with low peak power for long-range telemetry or reflectometry applications.
Article
Optics
Bahram Javidi, Artur Carnicer, Arun Anand, George Barbastathis, Wen Chen, Pietro Ferraro, J. W. Goodman, Ryoichi Horisaki, Kedar Khare, Malgorzata Kujawinska, Rainer A. Leitgeb, Pierre Marquet, Takanori Nomura, Aydogan Ozcan, YongKeun Park, Giancarlo Pedrini, Pascal Picart, Joseph Rosen, Genaro Saavedra, Natan T. Shaked, Adrian Stern, Enrique Tajahuerce, Lei Tian, Gordon Wetzstein, Masahiro Yamaguchi
Summary: This Roadmap article provides an overview of research activities in the field of digital holography, with sections covering sensing, 3D imaging, displays, virtual and augmented reality, microscopy, cell identification, tomography, label-free live cell imaging, and other applications. Each section represents the author's vision of the significant progress, potential impact, important developments, and challenging issues in the field of digital holography.
Article
Optics
Miguel Soriano-Amat, Hugo F. Martins, Vicente Duran, Sonia Martin-Lopez, Miguel Gonzalez-Herraez, Maria R. Fernandez-Ruiz
Summary: TE-Phi TDR is a distributed optical fiber sensing technique with centimeter scale resolution and low detection bandwidth, and a specific spectral phase coding methodology has been proposed to further increase its signal-to-noise ratio, leading to an experimental SNR improvement of up to 8 dB.
Article
Optics
F. Soldevila, A. J. M. Lenz, A. Ghezzi, A. Farina, C. D'Andrea, E. Tajahuerce
Summary: A new technique is introduced to rapidly acquire a giga-voxel 4D hypercube while measuring only 0.03% of the dataset. The system combines two single-pixel cameras and a conventional 2D array detector, utilizing data fusion techniques to identify different fluorophore species by their spectral and temporal signatures.
Article
Engineering, Electrical & Electronic
Miguel Soriano-Amat, Hugo F. Martins, Vicente Duran, Pablo Fermoso, Sonia Martin-Lopez, Miguel Gonzalez-Herraez, Maria R. Fernandez-Ruiz
Summary: Phase sensitive (TE-?)OTDR is a distributed fiber sensing technique that uses an electro-optic dual frequency comb (DFC) scheme, providing high spatial resolution with lower detection bandwidths compared to conventional phi OTDR systems. The limitations on resolution, range, and sensing bandwidth in TE-?OTDR are relaxed by implementing two frequency combs with quasi-integer-ratio repetition rates. The use of a rubidium atomic clock allows for up to 10(5) sensing points along 2 km of fiber with tens of Hz sensing bandwidth.
JOURNAL OF LIGHTWAVE TECHNOLOGY
(2023)
Article
Optics
Cristina M. Gomez-Sarabia, Enrique Tajahuerce, Jorge Ojeda-Castaneda
Summary: In this study, a device utilizing two pairs of varifocal cylindrical lenses for Gaussian design was discussed, which controls the scale of Fraunhofer diffraction patterns in an anamorphic manner without introducing vignetting and requiring mechanical compensation. The anamorphic capabilities were emphasized by considering the case M-y = 1/M-x.
Proceedings Paper
Optics
Osamu Matoba, Sudheesh K. Rajput, Manoj Kumar, Xiangyu Quan, Yosuke Tamada, Yasuhiro Awatsuji, Enrique Tajahuerce
THREE-DIMENSIONAL IMAGING, VISUALIZATION, AND DISPLAY 2020
(2020)
