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“#A photonic amorphous topological insulator” a-b, Particle patterns a and the corresponding photonic lattices b with different structural correlations. The crystalline lattice possesses both long-rang and short-range order; the glass-like lattices have strong short-range order; the liquid-like lattice yields weak short-range order. c, Pair correlation function g(r) for the different lattices which quantifies structural correlation….
“#In vivo imaging of the human cornea at high speed and high resolution” The super-camera allows for diagnosing corneal diseases quickly, cheaply and painlessly. Credit: IPC PAS, Grzegorz Krzyzewski If the eyes are the mirror of the soul, then thanks to the translucent corneas, we can look deep into that soul. And thanks to the…
“#Project creates more powerful, versatile ultrafast laser pulse” In the stretched-pulse soliton Kerr resonator developed by the lab of William Renninger, a single frequency laser enters a fiber ring cavity, generating a broad bandwidth comb of frequencies at the output that supports ultrashort femtosecond pulses. Inside the fiber cavity the pulses stretch and compress in…
“#Silicon core fishbone waveguide extends frequency comb” Waveguide design, Zhang et al. doi 10.1117/1.AP.2.4.046001. Credit: SPIE Frequency combs are becoming one of the great enabling technologies of the 21st century. High-precision atomic clocks, and high-precision spectroscopy are just two technologies that have benefited from the development of highly precise frequency combs. However, the original frequency…
“#A new method to significantly increase the range and stability of optical tweezers” Credit: Tomsk Polytechnic University Optical tweezers are a device which uses a laser beam to move micron-sized objects such as living cells, proteins, and molecules. In 2018, the American physicist Arthur Eshkin received the Nobel Prize for this technology. Before this, it…
“#Advanced Photon Source upgrade will transform the world of scientific research” Senior Research Associate Tim Graber tests a monochromator designed for use with the upgraded APS. The monochromator is now operating at the 2-ID beamline. Credit: Rick Fenner / Argonne National Laborator From chemistry to materials science to COVID-19 research, the APS is one of…
“#Physicists develop technology to transform information from microwaves to optical light” Credit: CC0 Public Domain Physicists at the University of Alberta have developed technology that can translate data from microwaves to optical light—an advance that has promising applications in the next generation of super-fast quantum computers and secure fiber-optic telecommunications. “Many quantum computer technologies work…
“#Researchers develop photonic crystal light converter” Twisted light. Circularly polarized laser light goes through the PCN device and comes out the other side as VUV polarized in the opposite direction. Credit: Konishi et al. Spectroscopy is the use of light to analyze physical objects and biological samples. Different kinds of light can provide different kinds…
“#Valley Hall nanoscale lasers developed” Scanning electron microscope image of the fabricated sample. The false-colour triangle marks the interior of the topological cavity. b Emission energy vs. the pump energy dependence showing a threshold transition to lasing. The sample is optically pumped at a 980 nm wavelength with 8 ns pulses at a 10 kHz…
“#Instantaneous color holography system for sensing fluorescence and white light achieved” Overview of the proposed instantaneous color-multiplexed holographic sensing technique with a computational coherent superposition (CCS) scheme. Credit: National Institute of Information and Communications Technology (NICT), Japan Science and Technology Agency (JST), Toin University of Yokohama, and Chiba University The National Institute of Information and…