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Hamamatsu Corp. - Creating a Better Future LB 1-25
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Research & Technology News

Photocatalysis Produces H2
Nov 1, 2001 — Researchers at Massachusetts Institute of Technology in Cambridge have demonstrated that light can be used to produce molecular hydrogen. If the catalytic technique can be optimized, it may yield a cost-effective means of producing environmentally friendly energy. The group, which reported the work in the Aug. 31 issue of Science, built on prior research into the use of dimeric rhodium complexes as a catalyst, which led to a stoichiometric process. It instead excites the precursor of the...
Sensor Array, Light Source or Both?
Nov 1, 2001 — Chemists are not content with detecting one or two chemical species within a sample. They prefer, when possible, to measure everything at once. This demand has generated a number of array-based detector technologies, including optical methods that...
Single-Beam Setup Simplifies Holography
Nov 1, 2001 — Holographic memory storage is no longer the stuff of science fiction but the target of scientific and commercial research. Thanks to a clever setup that uses one laser beam as both the object and the reference beam, the technology may be closer to...
Spectra for Quasars Pinpoint the Birth of Light
Nov 1, 2001 — Using the spectra from distant quasars taken by a 10-m telescope at W.M. Keck Observatory atop Mauna Kea, Hawaii, two teams of astronomers have suggested that the so-called cosmic Dark Ages came to an end approximately 900 million years after the...
System Enables Remote Writing
Nov 1, 2001 — If researchers at Carnegie Mellon University in Pittsburgh have their way, tomorrow's desktop won't look much different from today's, but pen and paper will enable distant colleagues to collaborate on a project, and students and teachers to interact...
Waveguides Write Themselves
Nov 1, 2001 — A team at Toyota Central Research and Development Laboratories Inc. in Nagakute, Japan, has developed a method of fabricating optical waveguides in resin that may lead to the production of three-dimensional optical modules as well as to the...
XOR: A Logical Choice for All-Optical Networks
Nov 1, 2001 — A new label-swapping technique promises faster data networks, increasing the commercial potential of videoconferencing, video on demand and video games via the Internet. Researchers at Technical University of Denmark's Research Center COM in Lyngby...
512-Pixel Detector Goes Organic
PALO ALTO, Calif. -- Soon man-made detectors may take their cue from nature and do their work organically. Researchers have demonstrated an image-capture array based on an organic light sensor, promising manufacturers the ability to tailor the sensitivity of a sensor to...
Antimissile System's Functionality Questioned
Oct 1, 2001 — Lt. Gen. Ronald Kadish, director of the Ballistic Missile Defense Organization, has announced that this month's test of the Ground-Based Midcourse Defense Segment (formerly National Missile Defense) antimissile system will be a repeat of the July 14...
Autofocus Glasses Under Development
ROANOKE, Va. -- As we age, the lenses in our eyes lose their flexibility. Eventually, most of us need glasses for reading. The problem is that reading glasses will not work for seeing distant objects, so we need bifocals, trifocals or multiple pairs of spectacles....
Corning, Xanoptix Display 3.125-Gb/s-Per-Channel Transceiver
Oct 1, 2001 — Corning Inc. of Corning, N.Y., and Xanoptix Inc. of Merrimack, N.H., have achieved data rates of more than 225 Gb/s over a total distance of 2.2 km of Corning's InfiniCor multimode fiber. The demonstration transmitted video traffic over the 1.1-km...
Dash Lasers Exhibit Room-Temperature Operation
Oct 1, 2001 — Researchers at the University of New Mexico in Albuquerque have fabricated quantum-dash lasers of InAs and InP that display pulsed output at 1.6 to 1.66 µm at room temperature. The devices feature threshold current densities as low as 410 A/cm2 and...
Double the Light, Double the Spectra
BURGOS, Spain -- Spectroelectrochemistry offers researchers a peek into numerous material properties and reaction mechanisms of organic and inorganic systems. Now a team at the University of Burgos has devised a technique that doubles the amount of data from an...
Fine Structure Constant, Speed of Light Varied with Time
Oct 1, 2001 — In 1937, physicist Paul A.M. Dirac suggested that the fine structure constant, which defines the strength of the electromagnetic force, might vary over time. Now a team of researchers from the University of New South Wales, Cambridge University,...
Laser Deposits ITO on Flexible Substrate
Oct 1, 2001 — A team of researchers at the Naval Research Laboratory in Washington has grown thin films of indium tin oxide on flexible substrates of polyethylene terephthalate using pulsed laser deposition. The technique may enable the production of organic LED...
Laser Enables Precision Arc Welding
COLUMBUS, Ohio -- Welding is big business. Approximately $2 billion and $600 million are spent annually on arc welding and laser welding equipment, respectively. Now researchers at Ohio State University have demonstrated a technique that could revolutionize the field...
Laser Writes Microlenses on Polyethylene
LEON, Mexico -- Electronics isn't the only technology where smaller is better. The same is true for infrared optical systems, where microlenses and diffraction gratings improve system performance. Traditionally, these microelements have been constructed using...
Laser Yields Tiny Bubbles of Boron
IBARAKI, Japan -- Don Ho is known for his "Tiny Bubbles in the Wine," but a research group is staking a claim to bubbles of boron. By synchronizing a laser-induced plasma with a radio-frequency-modulated plasma, the scientists have created tiny hollow balls of...
Lasers Deposit MgB2
COLLEGE PARK, Md. -- High-temperature superconductors have been around for 15 years, but the levitating trains and zero-loss power lines that these materials promised have yet to make an appearance. Nevertheless, investigations into the applications of superconductivity...
Lasers Replace Magnet Trap for Condensates
ATLANTA -- Bose-Einstein condensates are unique phases of matter in which particles share the same quantum wave function. They represent a coherent state of matter, analogous to the coherent state of photons created by a laser. They also make the study of...
Light Fields Act as Atom Optics
Oct 1, 2001 — Atom optics are essential to realize the potential of coherent matter waves in applications such as atom holography and interferometry. Researchers at Ludwig Maximilians Universitat in Munich and Max Planck Institut fur Quantenoptik in Garching,...
Motorola Grows GaAs on Silicon
TEMPE, Ariz. -- While III-V semiconductors have revolutionized electronics and photonics, the expense of their manufacture has limited widespread application. Researchers at Motorola Labs promise this will change. They have learned how to grow gallium arsenide on...
Nanoparticles Stabilize Colloidal Crystals
URBANA, Ill. -- Ask those who have tried to produce photonic bandgap materials in the lab with colloidal suspensions, and you're likely to hear about the cracks that appear as the crystals dry. A discovery by a team of researchers at the University of Illinois may...
Organic Salt Displays Laserlike Emission
Oct 1, 2001 — Researchers have ascribed the laserlike emission from organic dye molecules and conjugated polymers to mechanisms such as cooperative emission, amplified spontaneous emission and the formation of local cavities. A team at Auburn University in...
Polymer Optical Amplifiers Are on the Way
AMSTERDAM, Netherlands -- Optical polymers are attractive candidates for composing future integrated optical devices. The desirable rare-earth ions are insoluble in the polymers, however, precluding their use in integrated optical amplifiers. Now researchers at the FOM...

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