A polarization-maintaining photonic-crystal fiber in a Sagnac interferometer-based accelerometer configuration improves over fiber Bragg grating-based sensors for railway structural...
By using Fermat’s principle, which states that light takes the path it can traverse in the shortest time, the physical shape of a non-line-of-sight (NLOS) object can be reconstructed...
To develop avalanche photodiodes with both high sensitivity and high speed, special alloys lattice-matched to indium phosphide enable telecom-wavelength APDs fast enough to meet...
Using carefully grown GaSb/AlAsSb heterostructures that act as separate absorption and avalanche layers, gamma rays are easily absorbed and multiplied with high signal-to-noise...
Editor in Chief John Lewis introduces Laser Focus World’s September 2019 issue, which includes trends in photonics technologies, applications, and markets.
Using an iterative process that begins with simple geometric planes, freeform surfaces combine with flat phase elements to create compact, lightweight, easily aligned optical ...
Passively cooled high-power laser diodes with nonsoldered joints and new cooling scheme show high reliability under hard-pulsed and continuous-wave operation.
Digital-, discrete-, and continuous-zoom configurations can optimize testing of large and small optics with modern interferometers; however, each method has tradeoffs that users...
A twofold difference in ice attenuation in perpendicular directions in the IceCube experiment could be explained by a birefringent structure of the microcrystals in the ice.
Applying quantum technology to biosensing, for example, using DNA-stabilized metal ‘quantum clusters,’ will help extend the capabilities of modern optical biosensing.
Upgrading the Laser Interferometer Gravitational-Wave Observatory (LIGO) included the addition of a rubidium titanyl phosphate (RTP) Q-switch to handle high optical powers.