Search results for crystal waveguide

Condensed Matter May 28, 2026

Spin wave signals used in computing boosted more than 5,000 times in Z-shaped path approach

A research team from Tohoku University, Shin-Etsu Chemical Co., Ltd., and École Polytechnique Fédérale de Lausanne (EPFL) has invented a new way to efficiently guide spin waves around sharp corners with minimal loss—representing ...

Condensed Matter May 5, 2026

Inexpensive material compresses light, paving the way for photonic microcircuits in the terahertz range

A two-dimensional lamellar crystal composed of atomically thin layers of lead iodide (PbI2) could be used to manufacture a new generation of circuits that use light and mechanical vibrations (rather than electrons) to transmit ...

Optics & Photonics Apr 21, 2026

Photonic chip generates milliwatt-level UV light, 100 times brighter than before

Researchers from the University of Twente and Harvard University have developed a new way to generate ultraviolet (UV) light on a photonic chip at power levels high enough for real-world use. For the first time, the technique ...

Optics & Photonics Mar 9, 2026

Nanosecond light-by-light switching achieved in liquid crystal droplet

Controlling light with light is a long-sought goal for computing and communication technologies. Achieving this capability would allow optical signals to be processed without converting them into electrical signals, potentially ...

Optics & Photonics Jan 17, 2026

The world's first room-temperature continuous-wave UV-B laser diode on a sapphire substrate

Ultraviolet-B (UV-B) semiconductor lasers are highly sought for medical, biotechnology, and precision manufacturing applications; however, previous UV-B laser diodes were limited to pulsed operation or required cryogenic ...

Optics & Photonics Jan 13, 2026

Quantum-dot device can generate multiple frequency-entangled photons

Researchers have designed a new device that can efficiently create multiple frequency-entangled photons, a feat that cannot be achieved with today's optical devices. The new approach could open a path to more powerful quantum ...

Optics & Photonics Oct 10, 2025

The playbook for perfect polaritons: Rules for creating quasiparticles that can power optical computers, quantum devices

Light is fast, but travels in long wavelengths and interacts weakly with itself. The particles that make up matter are tiny and interact strongly with each other, but move slowly. Together, the two can combine into a hybrid ...

Optics & Photonics Oct 8, 2025

Programmable optical chip merges photons to change color

Cornell researchers have built a programmable optical chip that can change the color of light by merging photons, without requiring a new chip for new colors.

Optics & Photonics Oct 6, 2025

Chip-based phonon splitter brings hybrid quantum networks closer to reality

Researchers have created a chip-based device that can split phonons—tiny packets of mechanical vibration that can carry information in quantum systems. By filling a key gap, this device could help connect various quantum ...

Optics & Photonics Sep 30, 2025

Photodiode design using germanium solves key challenge in on-chip light monitoring

Programmable photonics devices, which use light to perform complex computations, are emerging as a key area in integrated photonics research. Unlike conventional electronics that transmit signals with electrons, these systems ...

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