New Method to Create Gamma Rays

A cloud of trapped particles converts laser energy into cascades of high energy photons

Terahertz Spectroscopy Goes Nano

New technique enables measurements down to a resolution of 20 nanometers

Bionic Camera Senses Colors and Polarization

The bio-inspired imager captures co-registered color and polarization information in real time with high resolution

Bridging the Terahertz Gap

Optical frequency comb offers a convenient way to generate elusive terahertz frequencies

Single Photon Reveals Entangle­ment of 16 Million Atoms

New results clarify the role of multipartite entanglement in ensemble-based quantum memories

Plasmons for Nanoscale Lasers

Visible-frequency lasing by leveraging surface plasmons propagating in an open Fabry-Perot cavity

Optical Fiber Senses Human Motion

The dye-doped polydimethylsiloxane optical fiber detects tensile strains by absorption of light

Smallest Optical Particle Accelerator

Electron energy gain reaches an extremely high value of 2.2 giga-electron-volts per metre

Laser Spectroscopy Offers Prospect for Dental Surgery

Use of laser-induced breakdown spectroscopy on oral tissues to benefit dental treatment

A Zero-Index Waveguide

Silicon waveguides support phase-free propagation in the telecom regime