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We demonstrate the combination of a hemispherical solid immersion lens with a micro-photoluminescence setup. Two advantages introduced by the SIL, an improved resolution of 0.4 times the wavelength in vacuum and a 5 times enhancement of the…

Optics · Physics 2009-11-07 S. Moehl , Hui Zhao , B. Dal Don , S. Wachter , H. Kalt

The Prime Focus Spectrograph (PFS) is an optical/near-infrared multi-fiber spectrograph with 2394 science fibers, which are distributed in 1.3 degree diameter field of view at Subaru 8.2-meter telescope. The simultaneous wide wavelength…

Instrumentation and Methods for Astrophysics · Physics 2015-06-22 Hajime Sugai , Naoyuki Tamura , Hiroshi Karoji , Atsushi Shimono , Naruhisa Takato , Masahiko Kimura , Youichi Ohyama , Akitoshi Ueda , Hrand Aghazarian , Marcio Vital de Arruda , Robert H. Barkhouser , Charles L. Bennett , Steve Bickerton , Alexandre Bozier , David F. Braun , Khanh Bui , Christopher M. Capocasale , Michael A. Carr , Bruno Castilho , Yin-Chang Chang , Hsin-Yo Chen , Richard C. Y. Chou , Olivia R. Dawson , Richard G. Dekany , Eric M. Ek , Richard S. Ellis , Robin J. English , Didier Ferrand , Décio Ferreira , Charles D. Fisher , Mirek Golebiowski , James E. Gunn , Murdock Hart , Timothy M. Heckman , Paul T. P. Ho , Stephen Hope , Larry E. Hovland , Shu-Fu Hsuc , Yen-Shan Hu , Pin Jie Huang , Marc Jaquet , Jennifer E. Karr , Jason G. Kempenaar , Matthew E. King , Olivier Le Fèvre , David Le Mignant , Hung-Hsu Ling , Craig Loomis , Robert H. Lupton , Fabrice Madec , Peter Mao , Lucas Souza Marrara , Brice Ménard , Chaz Morantz , Hitoshi Murayama , Graham J. Murray , Antonio Cesar de Oliveira , Claudia Mendes de Oliveira , Ligia Souza de Oliveira , Joe D. Orndorff , Rodrigo de Paiva Vilaça , Eamon J. Partos , Sandrine Pascal , Thomas Pegot-Ogier , Daniel J. Reiley , Reed Riddle , Leandro Santos , Jesulino Bispo dos Santos , Mark A. Schwochert , Michael D. Seiffert , Stephen A. Smee , Roger M. Smith , Ronald E. Steinkraus , Laerte Sodré , David N. Spergel , Christian Surace , Laurence Tresse , Clément Vidal , Sebastien Vives , Shiang-Yu Wang , Chih-Yi Wen , Amy C. Wu , Rosie Wyse , Chi-Hung Yan

In this paper, a modified Maxwell's fish-eye lens is proposed in order to achieve super-resolution imaging. This lens possesses elevated refractive index profile compared with the traditional Maxwell's fish-eye lens. The refractive index…

Classical Physics · Physics 2024-02-08 Liuxian Zhao , Chunlin Li , Xuxu Zhuang , Hao Guo , Yongquan Liu

The mid-infrared (mid-IR) is a strategically important band for numerous applications ranging from night vision to biochemical sensing. Unlike visible or near-infrared optical parts which are commonplace and economically available…

Multimodal tasks, such as image-text retrieval and generation, require embedding data from diverse modalities into a shared representation space. Aligning embeddings from heterogeneous sources while preserving shared and modality-specific…

Machine Learning · Computer Science 2024-12-03 Dongfang Zhao

Millimeter wave (mmWave) full-duplex (FD) is a promising technique for improving capacity by maximizing the utilization of both time and the rich mmWave frequency resources. Still, it has restrictions due to FD self-interference (SI) and…

Information Theory · Computer Science 2023-03-28 Songjie Yang , Wanting Lyu , Yunis Xanthos , Zhongpei Zhang , Chadi Assi , Chau Yuen

Context. Filamentary structures appear to be ubiquitous in the interstellar medium. Being able to detect and characterize them is the first step toward understanding their origin, their evolution, and their role in the Galactic cycle of…

Astrophysics of Galaxies · Physics 2022-12-14 J. -S. Carrière , L. Montier , K. Ferrière , I. Ristorcelli

The extraction of fibers from dMRI data typically produces a large number of fibers, it is common to group fibers into bundles. To this end, many specialized distance measures, such as MCP, have been used for fiber similarity. However,…

Computer Vision and Pattern Recognition · Computer Science 2017-09-20 Kuldeep Kumar , Pietro Gori , Benjamin Charlier , Stanley Durrleman , Olivier Colliot , Christian Desrosiers

We propose to use high numerical aperture single mode optical fibers like photonic crystal fiber for lensless in-line holographic microscopy. Highly divergent beam helps to overcome the spatial sampling limitation of the image sensor. In…

Optics · Physics 2020-07-01 Sanjeev Kumar , Manjunatha Mahadevappa , Pranab K. Dutta

Automated fiber placement (AFP) is an advanced manufacturing technology that increases the rate of production of composite materials. At the same time, the need for adaptable and fast inline control methods of such parts raises. Existing…

Computer Vision and Pattern Recognition · Computer Science 2019-10-14 Sebastian Zambal , Christoph Heindl , Christian Eitzinger , Josef Scharinger

Reconfigurable Intelligent Surfaces (RISs) are an emerging technology for future wireless communication systems, enabling improved coverage in an energy efficient manner. RISs are usually metasurfaces, constituting of two-dimensional…

Information Theory · Computer Science 2022-03-28 Konstantinos D. Katsanos , Nir Shlezinger , Mohammadreza F. Imani , George C. Alexandropoulos

Laser drilling becomes of increasing importance when hole diameter is in the range of 10 to 50 mum, for which conventional alternative approaches are becoming difficult and cost inefficient. Furthermore, it is viewed as the technique of…

Chemical Physics · Physics 2009-11-10 Sylvain Lazare , Vladimir Tokarev

In this communication, two novel low-cost single-layer filtering antennas (filtennas) are proposed for millimeter wave (mmWave) applications. The proposed filtennas consists of a compact circular substrate integrated waveguide (SIW) cavity,…

Signal Processing · Electrical Eng. & Systems 2025-06-03 Jiawang Li

Accurately rendering the appearance of fabrics is challenging, due to their complex 3D microstructures and specialized optical properties. If we model the geometry and optics of fabrics down to the fiber level, we can achieve unprecedented…

The evaluation of synthetic micro-structure images is an emerging problem as machine learning and materials science research have evolved together. Typical state of the art methods in evaluating synthetic images from generative models have…

Materials Science · Physics 2022-11-18 Devesh Shah , Anirudh Suresh , Alemayehu Admasu , Devesh Upadhyay , Kalyanmoy Deb

In this paper, we implement an optical fiber communication system as an end-to-end deep neural network, including the complete chain of transmitter, channel model, and receiver. This approach enables the optimization of the transceiver in a…

Integrated microwave photonic filters (IMPFs) emerge as promising candidates for advanced microwave systems owing to their distinctive combination of wide operational bandwidth, flexibility, and compact size. Nevertheless, the complex and…

The FITS is the standard file format in astronomy, and it has been extended to agree with astronomical needs of the day. However, astronomical datasets have been inflating year by year. In case of ALMA telescope, a ~ TB scale 4-dimensional…

Instrumentation and Methods for Astrophysics · Physics 2015-06-15 Satoshi Eguchi

Whispering gallery mode (WGM) microcavities can confine photons within a microscale volume for long periods of time, strongly enhancing light-matter interactions, and making it a crucial platform in optical science and applications. Current…

Applied Physics · Physics 2023-04-07 Fangxing Zhang , Shengnan HuangFu , Jialve Sun , Shengqiang Ji , Yanjie Bai , Yunfeng Xiao

Millimeter-wave (mmWave) positioning has emerged as a promising technology for next-generation intelligent systems. The advent of reconfigurable intelligent surfaces (RISs) has revolutionized high-precision mmWave localization by enabling…

Signal Processing · Electrical Eng. & Systems 2026-04-23 Xin Cheng , Yuqing Yang , Guangjie Han , Menglu Li , Ruoguang Li , Feng Shu