An optical coating like no other
For more than a century, optical coatings have been used to better reflect certain wavelengths of light from lenses and other devices or, conversely, to better transmit certain wavelengths through them. For example, the coatings on tinted eyeglasses.....»»
An optical and electrically driven single-molecule Raman switch
The role of molecular junctions in nanoelectronics is most often associated with electronic transport; however, their precise characterization hinders their widespread development. Recently, most research has focused on investigating molecular juncti.....»»
NASA improves GIANT optical navigation technology for future missions
Goddard's GIANT optical navigation software helped guide the OSIRIS-REx mission to the Asteroid Bennu. Today its developers continue to add functionality and streamline useability for future missions......»»
Study enhances validation of MERRA-2 aerosol optical thickness dataset in China
A new study published in Atmosphere on Oct. 23 has made advances in the validation of MERRA-2 Aerosol Optical Thickness dataset in China. The study was conducted by scientists from the Aerospace Information Research Institute (AIR) of the Chinese Aca.....»»
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.....»»
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.....»»
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.....»»
A self-wrinkling coating for impact resistance and mechanical enhancement
Polymer coating is widely used as a protective layer in various fields such as surface anti-corrosion, anti-penetration and anti-impact. How to enhance the mechanical properties of coatings such as impact resistance is important but challenging, unde.....»»
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.....»»