Laser Cooling Chills Radium Ions For The First Time

Researchers have successfully used laser cooling on radium ions for the first time. Given that lasers are known for heating things up, laser cooling may seem a contradiction in terms. However, scientists have devised a way to use the technology to achieve unparalleled levels of cold. Radium is the heaviest alkaline earth element, and the only ion in the column that hadn’t been laser cooled. says Andrew Jayich, an assistant professor of physics at the University of California, Santa Barbara. [Read More]

Diamond Nitrogen-vacancy Centers Power World's Smallest Radio Receiver

A tiny radio whose building blocks are the size of two atoms has been developed by Researchers from the Harvard John A. Paulson School of Engineering and Applied Sciences. Built out of an assembly of atomic-scale defects in pink diamonds, it is the world’s smallest radio receiver. The device can withstand extremely harsh environments and is biocompatible, meaning it could work anywhere from a probe on Venus to a pacemaker in a human heart. [Read More]

Meter-scale Optical Coherence Tomography Depth Barrier Broken

The first ever optical coherence tomography (OCT) images of cubic meter volumes have been produced, through an industry-academic collaboration. The advance could open up many new uses for OCT in industry, manufacturing and medicine. It also marks a milestone toward developing a high-speed, low-cost optical coherence tomography system on a single integrated circuit chip. James G. Fujimoto of the Massachusetts Institute of Technology (MIT), said: 1.5-meter Area 3D OCT Optical coherence tomography, first invented by Fujimoto’s group and collaborators in the 1990s, is currently the gold standard of care in ophthalmology and is increasingly used in cardiology and gastroenterology. [Read More]

Femtosecond Laser Pulse Control Of Electron Microscope Nanotips

A method of controlling electron emissions with higher precision than ever before has been developed by researchers at Vienna University of Technology, together with colleagues from the FAU Erlangen-Nürnberg in Germany. In an electron microscope, electrons are emitted by pointy metal tips, so they can be steered and controlled with high precision. Recently, such metal tips have also been used as high precision electron sources for generating X-rays. With the help of two laser pulses, it is now possible to switch the flow of electrons on and off on extremely short time scales. [Read More]

Measuring Microscale Granular Crystal Dynamics

For the first time ever, mechanical engineers have succeeded in analyzing interactions between microscale granular crystals. Designing materials that better respond to dynamic loading could help vehicles minimize vibration, better protect military convoys or potentially make buildings safer during an earthquake. Granular materials are assemblages of particles that range broadly from powders to sand to microscopic beads of glass. They are one of the least understood forms of matter due to the incredibly complex ways that those particles interact. [Read More]

First Nanoscale Tunable Infrared Source Unveiled

A new nanoparticle amplifier that can generate infrared light and boost the output of one light by capturing and converting energy from a second light has been demonstrated by photonics researchers at Rice University. The creation of Rice’s Laboratory for Nanophotonics (LANP), the device functions similar to a laser. While lasers have a fixed output frequency, however, the output from Rice’s nanoscale “optical parametric amplifier” (OPA) can be tuned over a range of frequencies that includes a portion of the infrared spectrum. [Read More]

New 20 Times More Powerful Diamond Laser

A diamond laser 20 times more powerful than previous diamond lasers has been demonstrated by researchers from the MQ Photonics Research Centre in collaboration with fiber laser experts from the Fraunhofer Institute for Applied Optics and Precision Engineering. Previous average power levels were less than 20 Watts. The new laser now provides up to 380 Watts of output power, which is the equivalent of approximately 400,000 laser pointers and enough power to easily cut through steel. [Read More]