Two types of phosphor-free white-emitting LEDs have been developed that appear, at first glance, to rely on the same concept for white-light emission; however, when examined in...
Environmental sensing and monitoring is rather vague terminology for an extremely broad and ever growing field that encompasses a vast array of detection and analysis techniques...
A harmonic optical element added behind the objective lens of a Blu-ray pickup allows it to handle Blu-ray, DVD, and CD wavelengths with a single optical system.
The Institute for Creative Technologies (ICT) at the University of Southern California (Los Angeles, CA) has developed a “hologram-like” 3-D videoconferencing system.
Commercial light-emitting diodes (LEDs) are only capable of 1 GHz maximum modulation speeds because of slow carrier recombination, limiting them to applications in short-haul ...
As the demand for higher-resolution complementary metal-oxide semiconductor (CMOS) image sensors continues to increase for cell-phone and digital-camera applications, shrinking...
Direct femtosecond laser writing is emerging as an alternative technique to lithography for fabrication of microstructures inside transparent materials.
In our increasingly “green” world, the need for portable and accurate atmospheric monitoring equipment, in which photonics plays a significant role, has expanded as society weighs...
A novel pinhole-type camera that substitutes a microelectromechanical systems (MEMS)-based micromirror array for the pinhole has been developed by the Research Center of MEMS ...
Ceramic hosts, transition-metal doping of II-VI hosts, and optically pumped semiconductor lasers are expanding the range of solid-state laser capabilities to new wavelengths and...
Infrared quantum-cascade detectors (QCDs) with high detectivities tend to have narrow spectral linewidths, due to the means of detection (optical bound-to-bound transitions).
A metamaterial consisting of periodic regions of high electrical conductivity in a 3 × 3 × 1.5 mm synthetic-diamond crystal has been fabricated by researchers at Kyoto University...
Bench-top laser-diode drivers and controllers have a wide variety of features, from voltage and temperature control to safety features and surge protection. Know the most important...
Long-range surface-plasmon polaritons (LRSPPs), which are electron disturbances at a metal surface resulting from interactions with light, may become a practical way to transmit...
A method of phase-locking an array of ten index-guided tapered laser diodes has been devised by researchers at CNRS and the Alcatel-Tales III-V Lab (both in Palaiseau, France)...
Although confocal microscopy (CM) is effective for subcellular imaging to depths of tens of microns (and for imaging fluorescently tagged tissues, unlike optical-coherence tomography...