Tunable "metasurface" is akin to optical swiss army knife
MIT engineers and colleagues report important new advances on a tunable metasurface, or flat optical device patterned with nanoscale structures, that they compare to a Swiss army knife while its passive predecessor can be thought of as just one tool,.....»»
Room-temperature continuous-wave topological Dirac-vortex microcavity lasers on silicon
With the explosive growth of data traffic, it is highly desired to develop hybrid photonic integrated circuits combining various optical components on a single chip......»»
Astronomers discover new almost dark galaxy
By analyzing deep optical imagery from the IAC Stripe 82 Legacy Project, an international team of astronomers has serendipitously discovered a new almost dark galaxy. The newfound galaxy, dubbed "Nube," has a very low surface brightness and is as mas.....»»
Researchers demonstrate a high-speed electrical readout method for graphene nanodevices
Graphene is well-known for its high electrical conductivity, mechanical strength, and flexibility. Stacking two layers of graphene with atomic layer thickness produces bilayer graphene, which possesses excellent electrical, mechanical, and optical pr.....»»
Realizing vertical ultraviolet-B semiconductor laser diodes for high optical output
Ultraviolet (UV) rays are electromagnetic waves with wavelengths ranging from 100 to 380 nanometers (nm). These wavelengths can be classified into three regions: UV-A (315–380 nm), UV-B (280–315 nm), and UV-C (100–280 nm), with the latter two c.....»»
Chaos Raman distributed optical fiber sensing
The timeliness and accuracy of detection technology is directly related to the safety of people's lives and property. In the application of this technology, temperature is a physical quantity that must to be focused on. Compared with other temperatur.....»»
Blue Origin reveals its orbital maneuvering vehicle: Blue Ring
The Jeff Bezos-founded aerospace company, Blue Origin, recently announced its new and upcoming Swiss army knife-style spacecraft platform, Blue Ring, which comes after very little public discussion by Blue Origin regarding this project. For example,.....»»
Exploring optical properties of hollow cirrus clouds for enhanced lidar data interpretation
Researchers led by Prof. Wang Zhenzhu from the Hefei Institutes of Physical Science of the Chinese Academy of Sciences and their collaborators have explored the optical properties of hollow cirrus clouds for enhanced lidar data interpretation, with a.....»»
Manipulating collective motions of electrons and solvent molecules in a polar liquid
Researchers at the Max-Born-Institute have now mapped the linear and nonlinear optical polaron response using ultrafast two-dimensional spectroscopy in the THz frequency range. As they discuss in the current issue of Physical Review Letters, multi-ph.....»»
Researchers develop an innovative microscope platform to unveil the intricacies of skeletal muscle regeneration
Researchers at the Hong Kong University of Science and Technology (HKUST) have created a cutting-edge platform consisting of a dual-laser nonlinear optical microscope to investigate the dynamics of muscle satellite cells (MuSCs) during the process of.....»»
Widely tunable and high resolution mid-infrared laser based on optical parametric oscillator
A widely tunable and high resolution mid-infrared radiation source operating in the 3–5 µm region has been applied to numerous frontier applications, including remote sensing, molecular spectroscopy, and atmosphere environmental monitoring......»»
New photonic chips for high-capacity data transmissions
With the growth in artificial intelligence (AI), 5G systems, cloud computation, and the Internet of Things, transmitters with extremely high capacities are required for data communication. Ultrafast optical modulation is an essential technology for h.....»»
How to watch the 2023 Swiss Indoors online for free
Watch the 2023 Swiss Indoors Basel for free from anywhere in the world. TL;DR: Prime Video is hosting the 2023 Swiss Indoors. You can watch for free with a 30-day trial of Amazon Prime.We've said it before and we'll say it again: If you're inte.....»»
Local chemical pressure experimentally sensed by optical probe
The practical application of high-pressure metastable materials is hindered by severe synthesis condition, poor yield, and mostly vanishing phase and phenomena after decompressing. The scaled-up capture of these metastable states to ambient pressure.....»»
High-speed electro-optic modulation in topological interface states of a one-dimensional lattice
Electro-optic modulators, which convert signals from the electrical to the optical domain, are at the heart of optical communications, terahertz wireless communications, microwave signal processing, and quantum technology. Next-generation electro-opt.....»»
Uncovering the secrets of spin-orbit optical Rabi oscillations
The Rabi oscillation has been proven to be one of the cornerstones of quantum mechanics, triggering substantial investigations in different disciplines including atomic and molecular physics, acoustics, and optics. Various important applications have.....»»
New easy-to-use optical chip can self-configure to perform various functions
Researchers have developed an easy-to-use optical chip that can configure itself to achieve various functions. The positive real-valued matrix computation they have achieved gives the chip the potential to be used in applications requiring optical ne.....»»
Creating a broadband diffractive graphene orbital angular momentum metalens by laser nanoprinting
Optical beams carrying orbital angular momentum (OAM) attract widespread attention and play an important role in optical data storage, optical communications, quantum information processing, super-resolution imaging, and optical trapping and manipula.....»»
Scientists demonstrate electrically tunable microlens array using simple PSCOF approach
Microlens arrays are one of the key elements that are promising in autostereoscopic display, optical communication, wavefront sensing, integral imaging, etc. For example, microlens arrays are the critical components in integral imaging, which are use.....»»
Record-high 3D printing rate reached by acousto-optical scanning
Professor Wei Xiong's group, from the Wuhan National Laboratory for Optoelectronics at Huazhong University of Science and Technology, proposes a pioneering high-speed multi-photon polymerization lithography technique with a record-high 3D printing ra.....»»
5 things to know about NASA"s deep space optical communications
Slated to launch on Oct. 12 with the Psyche mission, DSOC will demonstrate technologies enabling the agency to transmit higher data rates from deep space......»»