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Meadowlark Optics - Wave Plates 6/24 LB 2024
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Research & Technology News

Rydberg Atoms Enable High-Speed IR Imaging
AMSTERDAM, Netherlands -- AMSTERDAM, Netherlands -- Researchers at the FOM Institute for Atomic and Molecular Physics have developed an infrared imager that performs faster and with greater wavelength selectivity than most conventional long-wavelength cameras. Using the properties of gas-phase atoms in a Rydberg state, the innovation allows detection of low-energy IR photons at specific wavelengths while screening out unwanted broadband radiation. Electrons are bound to atoms at very low energies in the Rydberg sta...
Silica Sol Glues 3-D Silica Network
Jul 1, 1999 — A group of scientists at the Naval Research Laboratory in Washington has demonstrated the use of silica sol as a nanoscale glue to prepare composite gels and aerogels. The discovery could lead to fabrication of nanoscale materials for electronic and...
Single-Crystal Thin Films Offer Promise for Free-Space Interconnects
Jul 1, 1999 — High-speed, single-pass thin-film electro-optic modulators could enhance the performance of a number of photonic devices, including free-space interconnects. Such a device could replace liquid crystal-based devices in applications where much higher...
Stopped-Flow Device Improves Time-Resolved FTIR
Jul 1, 1999 — To perform long-path absorbance measurements for liquid samples, a luminescence detector cell must act as an optical fiber or waveguide. Otherwise, excessive noise results. And if the cell is to function as a liquid core waveguide, it must be made...
Stopped-Flow Device Improves Time-Resolved FTIR
Jul 1, 1999 — Chemists have relied on time-resolved Fourier transform infrared spectroscopy to investigate chemical reactions for years. Most of those reactions, however, were initiated externally by a laser or followed at a single wavelength. Although it is...
Tabletop Laser Sparks Nuclear Fusion
LIVERMORE, Calif. — Researchers at Lawrence Livermore National Laboratory have demonstrated that big things can come from small packages. The scientists used a tabletop laser to ignite nuclear fusion in a gas jet of deuterium, an isotope of hydrogen. This successful...
Technique Enables Flexible, Thin Displays
KENT, Ohio — Researchers have developed a method similar to that used to prepare polymer-dispersed liquid crystal devices, but resulting in very different internal geometry and performance. The technique provides a simpler and less expensive way to fabricate...
Technique Regulates Light in Liquid
UTRECHT, Netherlands — Chemists at Utrecht University and Philips Research have developed a technique to regulate light flow through a liquid using an electric field. Based on the phenomenon of light absorption by "nanorods" -- metal particles that measure 12 to 22 nm in...
Vacuum-UV Laser Absorption Spectroscopy Measures Fluorine Atoms
Jul 1, 1999 — To process large-scale integrated circuits, engineers must control the density of fluorine atoms to etch SiO2. Researchers at Kyoto University in Japan have proposed a means of assessing the fluorine density using a vacuum-ultraviolet laser...
Visible Light Reflects Nearly Perfectly
ESSEN, Germany -- ESSEN, Germany -- Materials with photonic bandgaps hold great promise for a wide variety of applications, but three-dimensional versions are difficult to manufacture. A few research groups have developed one-dimensional photonic crystals with a...
’Sandpaper’ Alloy Eyed as Potential Semiconductor
Jun 1, 1999 — Silicon carbide, a close cousin of sandpaper, may be used for a rugged new type of semiconductor, according to recent findings by a group of researchers from the University of Delaware in Newark. The group created an alloy of silicon carbide and...
A Photon for Your Thoughts
CHAMPAIGN, Ill. -- CHAMPAIGN, Ill. -- Photonics is still a long way away from reading your thoughts, but a new optical scanning technique can at least detect where and when in your brain those thoughts are activating neurons. Unlike spatially resolved techniques for...
American Xtal Technology Grows Silicon Carbide Crystals
Jun 1, 1999 — Companies have eyed silicon carbide for its potential use in a wide range of electronic and optoelectronic devices. Now American Xtal Technology Inc. in Fremont, Calif., has announced it has grown its first silicon carbide crystals, which could pave...
Corning Delivers Mirror for Airborne Laser
Jun 1, 1999 — The US Air Force’s Airborne Laser Program has marked another milestone with the delivery of the primary optical mirror to Contraves Brashear Systems LP in Pittsburgh. Manufactured by Corning Inc. in Corning, N.Y., the mirror will focus the...
Ge-Doped Glass Produces Unique Light Polarization
Jun 1, 1999 — Researchers led by Patrick Kazansky of the Optoelectronics Research Center at the University of Southampton in the UK have conducted a series of experiments that may further explain light polarization in glass. They used Ge-doped silica glass, which...
InGaN Quantum-Well Laser Diode Achieves CW Operation
Jun 1, 1999 — Researchers from Xerox’s Palo Alto Research Center in California have demonstrated continuous-wave (CW) operation of InGaN quantum-well laser diodes at room temperature. The quantum wells were grown on sapphire substrates using organic...
Laser Sampler Takes Aim at Mars
LOS ALAMOS, N.M. — In a bid to improve on the soil sampling methods used in planetary exploration, researchers at Los Alamos National Laboratory are developing a laser-based system suitable for use on Mars that would work rapidly and remotely. Laser plasma is formed...
Laser Scoring Improves Glass
CORNING, N.Y. -- CORNING, N.Y. -- Three decades ago it was proposed that a CO2 laser could be used to draw a crack in a sheet of glass to separate it into smaller pieces. Further developed in Russia, the technique was brought to Corning Inc. in 1989 to scale it up...
Lasers to Bring Order to Construction Site
GAITHERSBURG, Md. -- GAITHERSBURG, Md. -- Keeping track of personal items is a challenge familiar to many of us. The problem is on a much larger scale for contractors, who must coordinate hundreds of materials, workers and tools on construction sites. In a business...
Lidar Helps Researchers Analyze
Jun 1, 1999 — Researchers from the National Center for Atmospheric Research in Boulder, Colo., are using an assortment of remote sensors, including a polarimetric radiometer, lidar, radar and weather balloons, in a series of tests aimed at improving knowledge of...
Method Speeds Superconductor Lithography
ALBUQUERQUE, N.M. — Superconducting materials have a number of potential applications, including high-performance amplifiers, switches and logic circuits. Tailoring the size, shape and pattern of their microstructures provides control of the critical current, the point...
Microscopic Bundle Lases Like a Sieve
DARMSTADT, Germany — A recent innovation in lasers might make a bundle -- a microscopic bundle, anyway. Researchers at the Darmstadt University of Tech nology have fabricated a new class of microlasers by using a molecular sieve to hold an organic dye.A scanning...
Optical Sensor Promises Safer Air Travel
Jun 1, 1999 — An optical sensor could offer added security to pilots and passengers flying on commercial airliners. Developed by Physical Sciences Inc. in Andover, Mass., the sensor sends pulses from a diode laser upstream of the main part of the aircraft’s...
Photodynamic Therapy Targets Eyes
CAMBRIDGE, Mass. — Doctors at Massachusetts Eye and Ear Infirmary recently began preclinical trials of photodynamic therapy treatments for age-related macular degeneration and ocular melanoma. Patients are injected with a photosensitive chemical that accumulates in...
Photonic Homes and Gardens
TUCSON, Ariz. -- TUCSON, Ariz. -- The remodeling plans for the kitchen of Stephen Jacobs did not include this fan-shaped spectral decor. Jacobs, a retired professor from the University of Arizona’s Optical Sciences Center, attributes the serendipitous design...

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