A nitrogen-vacancy (NV) diamond produces single photons; a metalens etched into its surface collects them, no microscope needed.

Approaches for determining laser beam quality differ for different applications; this summary of best practices covers them all.

Nanowires of InAs and InAsSb on an indium phosphide substrate form room-temperature SWIR or MWIR photodiodes suitable for focal-plane arrays.

The first femtosecond fiber laser that economically delivers both 1300 and 1700 nm laser light simultaneously provides the repetition rate and fluence levels required for emerging...

A clever optomechanical setup enables researchers to use patch clamp, Ca2+ imaging, and optogenetics to elucidate the roles of various neurotransmitters and correlate them with...

A rotatable lithium niobate upconversion crystal generates phase matching of concentric rings in the object plane, leading to a wide field of view.

Compared to the current capabilities of sensitive detector coatings used for gravitational-wave detection on instruments such as LIGO, next-generation coatings with even lower...

Mid-IR direct absorption spectroscopy using compact quantum cascade lasers removes uncertainties in ethanol measurements in the presence of water, proving its ability to be used...

Semiconductor optical amplifiers and other on- and off-chip components are being integrated in miniaturized, efficient silicon-photonics-based transceiver devices to enable broadly...

Narrowline blue laser emission has been reported from an electrically pumped film of the organic substance BSBCz coupled with a distributed-feedback grating.

Distributed fiber-optic sensing architectures complement physical borders by providing accurate, cost-effective, real-time monitoring of perimeter intrusions.

A large-aperture, large-field-of-view dynamic liquid crystal metasurface beam steerer for automotive lidar has no moving parts.

After 23 years shaping industrial laser technology development in Germany and worldwide, Reinhart Poprawe retires from Fraunhofer ILT and RWTH Aachen University.