Optics & Photonics – Page 3 – En.BuradaBiliyorum.Com

Science

#Electromagnetic chirality: From fundamentals to nontraditional chiroptical phenomena

Admin6 years ago08 mins

“#Electromagnetic chirality: From fundamentals to nontraditional chiroptical phenomena” by Light Publishing Center, Changchun Institute of Optics, Fine Mechanics And Physics, Chinese Academy </p><div> <div> <div data-src=”https://scx2.b-cdn.net/gfx/news/hires/2020/1-electromagne.jpg” data-sub-html=”Chiroptical properties of discrete scattering chiroptical objects (chiral molecules and particles) and continuous chiroptical media can be quantified. In addition, chiroptical properties of light have been quantified in terms…

Science

#Super-resolution imaging with diagonal sampling

Admin6 years ago08 mins

“#Super-resolution imaging with diagonal sampling” Frequency-domain diagonal extension imaging. Credit: Jiang et al., doi 10.1117/1.AP.2.3.036005. The charge-coupled device (CCD) revolutionized photography by enabling the capture of light electronically, as recognized by the 2009 Nobel Prize in Physics. However, CCD/CMOS pixel size has become a bottleneck for digital imaging resolution. The problem stems from a formal…

Science

#Demonstrating the dynamics of electron-light interaction originating from first principle

Admin6 years ago09 mins

“#Demonstrating the dynamics of electron-light interaction originating from first principle” The profile of the electron wavepacket in (a) real space and (b) reciprocal (momentum) space. (c) Scalar and (d) vector potentials of the electromagnetic field. Credit: Nahid Talebi With the highest possible spatial resolution of less than a millionth of a millimeter, electron microscopes make…

Science

#True holographic movies are within grasp

Admin6 years ago07 mins

“#True holographic movies are within grasp” Credit: CC0 Public Domain Holographic movies, like the one R2D2 projected of Princess Leia in “Star Wars: A New Hope,” have long been the province of science fiction, but for most of us, the extent of our experience with holograms may be the dime-sized stamps on our passports and…

Science

#Tiny circuits, long distances: Smaller light processing devices for fiber-optic communication

Admin6 years ago07 mins

“#Tiny circuits, long distances: Smaller light processing devices for fiber-optic communication” Credit: CC0 Public Domain Researchers at Michigan Tech have mapped a noise-reducing magneto-optical response that occurs in fiber-optic communications, opening the door for new materials technologies. Optical signals produced by laser sources are extensively used in fiber-optic communications, which work by pulsing information packaged…

Science

#Optical imaging enters sub-nanometer era

Admin6 years ago07 mins

“#Optical imaging enters sub-nanometer era” Schematic of the experimental set-up for single-molecule photoluminescence imaging with sub-nanometer resolution. Credit: Yang Ben, Huang Wen et al. Prof. Dong Zhenchao and Prof. Hou Jianguo from the University of Science and Technology of China (USTC) of the Chinese Academy of Sciences (CAS) have improved the spatial resolution from 8…

Science

#Multidimensional, dual-channel vortex beam generator

Admin6 years ago05 mins

“#Multidimensional, dual-channel vortex beam generator” Beam generator. Credit: Fan et al., doi: 10.1117/1.AP.2.4.045001 Optical vortices, characterized by a helical phase front and doughnut-shaped intensity distribution, contribute to a broad range of applications, from microscopy to optical communications. And applications for optical vortices are proliferating. So, what’s the best way to generate optical vortices? Active, direct…

Science

#Music goes terahertz

Admin6 years ago08 mins

“#Music goes terahertz” A strong light pulse (white) can turn the saturable absorber (gold grating) into a nearly perfect mirror. Background photo: magnified view of a quantum cascade laser (center part of the silver area). Credit: Juergen Raab, Universitaet Regensburg. Use only for reporting on this study. An international research team from Germany, Italy, and…

Science

#Octupole corner state in a three-dimensional topological circuit

Admin6 years ago012 mins

“#Octupole corner state in a three-dimensional topological circuit” (a) Theoretical mode of the unit cell. (b) Fabricated sample which contains 2.5×2.5×2.5 unit cells. Credit: by Shuo Liu, Shaojie Ma, Qian Zhang, Lei Zhang, Cheng Yang, Oubo You, Wenlong Gao, Yuanjiang Xiang, Tie Jun Cui & Shuang Zhang Higher-order topological insulators featuring quantized bulk polarizations and…

Science

#Nanodots made of photovoltaic material support waveguide modes

Admin6 years ago08 mins

“#Nanodots made of photovoltaic material support waveguide modes” Stibnite nanodots, Zhan et al., doi: 10.1117/1.AP.2.4.046004. Credit: SPIE Antimony sulfide, or stibnite (Sb2S3), has been investigated intensively in recent years as a promising material for nontoxic, environmentally friendly solar cells. It is now possible to fabricate thin photovoltaic films from an ink containing nanoparticles of stibnite,…