The ability to see nanoparticles directly and individually allows a nanoparticle tracking analysis system to analyze samples with particles of varying sizes and shapes.
Nov. 1, 2008
(Courtesy of Polymer Optical Fiber Application Center, Nürnberg)
Polymer optical fiber is benefiting from new modulation techniques and polymer designs that are extending data rates to 100 Gbit/s and improving POF performance for sensors, data...
By changing the air-filling fraction of the photonic-crystal fibers used in white-light supercontinuum sources, the traditional “blue deficiency” of such sources is eliminated...
Fabrication of three-dimensional metamaterials with negative refractive index at optical wavelengths has opened the way to dramatic new types of optics, such as “superlenses.
Compared to ultraviolet detectors based on traditional semiconductors like silicon and gallium arsenide, nitride-based UV detectors have improved insensitivity to visible and ...
An advanced thin-film metrology tool based on spectroscopic ellipsometry and dedicated to the measurements of blank and patterned wafers is designed to reduce the need for modeling...
Optically active color centers in diamond have been found to exhibit attractive optical properties that have paved the way to the realization of practical sources of single-photon...
It makes sense that if the performance of a terahertz emitter is directly impacted by its surface structure (see “Black silicon emits terahertz radiation,” p.46)
Biological scientists have often referred to proteomics, or the study of the proteome (a word coined in 1994 from protein and genome), as the next step after the gene sequencing...
While red- and green-emitting phosphorescent organic light-emitting diodes (PHOLEDs) have made progress in the ten years since their discovery, blue PHOLEDs still are not efficient...
The hypothetical Maxwell’s demon opens and closes a tiny trapdoor dividing two containers of gas to shuttle atoms one way without exerting effort, raising the number of atoms ...
Supercollimation, the propagation of light without diffraction, uses the properties of photonic crystals to transmit signals over centimeter-scale distances—ideal for integrated...
Silicon (Si) nanowires are attractive as photodetectors for wavelengths ranging from ultraviolet (UV) to infrared because of their ability to trap carriers at the surface with...
In a one-dimensional (1-D) periodic Bragg stack of light-emitting quantum wells (QWs), the standing-wave pattern has nodes at the QW positions, which for normal (perpendicular...
Scientists at Discovery Semiconductors (Ewing, NJ), Science Applications International (Albuquerque, NM), the Air Force Research Laboratory (Kirtland AFB, NM), and Schafer (Albuquerque...
The rapid transition to light-emitting-diode (LED) light sources for applications across dozens of industries creates new challenges for optical engineers and the ray-tracing ...
Millimeter-size spheres of water driven back and forth like a harmonic oscillator can effectively capture high-quality video and images with much faster focusing than conventional...
Scientists in the United States and Europe have independently announced records for solar-cell efficiencies, adding more mile markers on the road to low-cost solar energy.
Nanosphere (Northbrook, IL) has developed a workstation that uses silver-coated gold nanoparticles to allow the simultaneous detection of multiple genetic targets with a single...
The world’s largest semiconductor company, Intel (Santa Clara, CA), is actively pursuing development of optical interconnects for use in and between computers.
A technique for making physically robust nanoscale optical components—precisely modeled on physiological structures of insects—has enabled researchers at Pennsylvania State University...
Null optics allow mild to strong aspheres to be interferometrically tested. As an alternative, subaperture-stitching interferometry measures mild to moderate aspheric surfaces...
Treating silicon with repeated high-energy laser pulses or through etching in a plasma creates nanosize structures on its surface, rendering the silicon black in color and able...
Alignment of electro-optical devices with multiple paths, multiple sources, off-axis elements, tight tolerances, or difficult components can be simplified through well-known tools...
When specifying a microspectrometer, the most important factors to consider for a given application include optical resolution, slit size, sensitivity, signal to noise, and grating...
![The three beams in the 2D-IR experiment include two IR (ωα and ωβ) and one visible (ωγ). The time delays of the ωβ IR pulse and visible pulse relative to the ωα IR pulse (top) are controlled by two delay stages (bottom). The lenses (L1 to L7) are all of calcium. The four-wave-mixing signal is detected by a photomultiplier after going through a series of filters (three short-pass filters at 770 nm and a 40-nm-bandwidth interference filter at 700 nm). [5]](https://img.laserfocusworld.com/files/base/ebm/lfw/image/2016/01/th_299855.png?auto=format,compress&fit=crop&q=45&h=139&height=139&w=250&width=250)
