3-D Projection Into Thin Air

New kind of a volumetric display shows detailed 3D-images with the help of an optical particle-trap

Fundamental Limit of Blue LEDs

Core mechanism limits the indium content in indium gallium nitride thin films – the key material for blue light emitting diodes

Doubling Frequency of Transportable Lasers

New system showed 130 h uninterrupted operation without decay in output power at 313 nm

Sharper Images of Quantum Dots

New nanoscope based on STED also works with atoms that have just two energy states

DNA for Optically Active Superlattices

The change in DNA length provides extreme tunability of optical properties

Ultra-Thin Optical Fibers for Tiny 3D-Print Micro­struc­tures

New possibilities for advanced microfabrication through endoscopic probes with inexpensive laser sources

More Effi­cient Fre­quen­cy Combs

Pulses of light to en­crypt data and pro­tect secu­rity of crypto­curren­cies

New Glass Shows Switchable Opacity

Nanoscale structures enable smart glass that switches from hazy to clear in presence of water

Optical Microstructures Using Lithium Niobate

An ultralow loss monolithic integrated lithium niobate photonic platform consisting of subwavelength waveguides

Facet Reflectors for On-Chip Lasers

An alternative fabrication scheme for microscale semiconductor lasers beyond conventional silicon