optics

Scientific Reports, Published online: 05 June 2026; doi:10.1038/s41598-026-56158-5 Apodized fiber Bragg grating filters for efficient QKD channel separation in QKD-over-DWDM systems

Water is the enemy. In the terahertz band, that slice of the spectrum wedged between microwaves and infrared light, water swallows the radiation more than a million times more greedily than it swa New! Sign up for our email newsletter on Substack. New! Sign up for our email newsletter on Substack. Water is the enemy. In the terahertz band, that slice of the spectrum wedged between microwaves and …

Scientific Reports, Published online: 04 June 2026; doi:10.1038/s41598-026-55778-1 Phase-noise and stability comparison of fiber-loop and integrated-waveguide coupling in optomechanical crystal oscillators

Researchers at EPFL have developed a chip-scale ultrafast laser that performs on par with traditional tabletop femtosecond lasers. The innovation could make advanced laser technologies far smaller, cheaper, and more accessible for applications ranging from medical diagnostics to atomic clocks.

Until now, quantum sensing has primarily been known from solid-state materials such as diamonds with deliberately introduced tiny defects.

Nature Communications, Published online: 03 June 2026; doi:10.1038/s41467-026-73780-z It is well established that intense laser pulses can demagnetize magnetic matter; however, the inverse process of magnetic moment enhancement by ultrafast laser light is generally precluded. Here, Sharma and coauthors show how combining a spin-orbit-induced spin texture with strong optical drive in CrSBr and CrI…

Nature Communications, Published online: 03 June 2026; doi:10.1038/s41467-026-73972-7 A closed-loop two-photon printing system based on a single-cavity dual-comb laser is developed to eliminate traditional complex calibration processes and significantly improve the fabrication reproducibility for largescale continuous nanofabrication.

Nature, Published online: 03 June 2026; doi:10.1038/s41586-026-10637-x Chiral perovskite superlattices exhibit room-temperature circularly polarized superfluorescence, with emission intensity and polarization controllable by weak magnetic fields.

Hello everyone! So I'm working through problems from this years' polish physics olimpiad, and I have a problem with one problem (I google-translated it, hope it's not a problem): A flat wall contains three equidistant, thin slits of identical length. The distance between adjacent slits is d =... Read more

Nature Communications, Published online: 03 June 2026; doi:10.1038/s41467-026-74027-7 Here, the authors reported a manipulation method combining optothermal tweezers and ice water phase transition, which can achieve manipulation and assembly of particles on the interface with nanoscale precision.

Nature Communications, Published online: 03 June 2026; doi:10.1038/s41467-026-73771-0 The authors identify ferron quasiparticles in layered CuInP2S6 and show that they drive light induced photocurrent hysteresis, offering a route toward advanced optoelectronic and neuromorphic devices.

I don't even have enough education in physics to even be considered a novice. And this might be a 'duh' observation. To begin with consider that we don't properly conceive what light really is. We define it in ways that we can work with it. What we define could just be like shining a... Read more

Nature Physics, Published online: 02 June 2026; doi:10.1038/s41567-026-03300-9 Periodic atomic arrays can modify collective light scattering, but most studies have focused on one- and two-dimensional systems. Now experiments with a three-dimensional array show strong omnidirectional suppression of coherent light scattering.

I came across this article from 2011 https://dx.doi.org/10.1088/1367-2630/13/8/083007 In the introduction-it talks about the difficulties of electromagnetic cloaking and went so far as to say that it is difficult to achieve WITHOUT Superluminal propagation to infinity. This is NOT the... Read more

Nature Communications, Published online: 02 June 2026; doi:10.1038/s41467-026-73984-3 Continuous-wave (CW) organic lasers remain challenging due to triplet accumulation and thermal degradation. Here, authors employ monolayer organic molecular crystal gain medium within hexagonal boron nitride microdisk to overcome those difficulties, enabling CW organic lasing at room temperature.

A remarkable crystal called molybdenum oxychloride could help make futuristic technologies like smart contact lenses and ultrathin AR glasses a reality. Scientists have created the first detailed experimental map of its optical properties, revealing the strongest light-bending effect ever measured in a natural material. The crystal can act either like a reflective metal or transparent glass, allo…

Scientific Reports, Published online: 01 June 2026; doi:10.1038/s41598-026-55536-3 Upconversion detection of terahertz wave with nanosecond pulse duration using continuous-wave laser

Researchers have developed a compact quantum detector that makes terahertz radiation much easier to detect. A specially designed metasurface funnels incoming energy into tiny active regions, greatly strengthening the electrical signal produced. The approach boosted efficiency by roughly 20 times compared to earlier designs and could pave the way for more practical THz devices in healthcare, commu…

A team of scientists is exploring ways to use dark craters at the lunar poles as sites for ultrastable lasers to aid in surface and near-lunar navigation. The group, led by Physicist Jun Ye, an expert on lasers and precision measurements, were discussing the types of instruments that Artemis astronauts could install and use during their time on the Moon.

Scientific Reports, Published online: 30 May 2026; doi:10.1038/s41598-026-51796-1 Effect of electron irradiation on the optical and electrical properties of Manganese Mercury Thiocyanate and Manganese Mercury Thiocyanate Di Methyl Sulfoxide Crystals