Continuously Emitting Microlasers

A new energy-looping excitation mechanism in lanthanide-doped upconverting nanoparticles

Single Microcomb Replaces Multiple Lasers

First coherent-transmission experiments using amplitude modulation of a dark-pulse comb

New Type of Silicon Laser

Unconventional approach uses a combination of light and sound waves to amplify light

Real-Time Monitoring of High-Power Lasers

A compact, high-accuracy high-power laser power meter in the form of a folding mirror

Molecules Brilliantly Illuminated

A new high-power laser system generates ultrashort pulses covering a large share of the mid-infrared spectrum.

Dual Frequency Comb on a Chip

Approach could lead to low-cost, portable sensing and spectroscopy in the field in real time

A Spinning Top of Light

Light pulses for attosecond measurements of chiral-sensitive processes in gas and condensed phase

A Topological Insulator Laser

Lasing mode exhibits topologically-protected transport without magnetic fields

Doubling Frequency of Transportable Lasers

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

Quantum Dots Amplify Light

Light amplification with electrically stimulated quantum dots is a critical step towards solution-processible laser diodes