Oxford Instruments WITec GmbH - Raman Microscope LB 12/25

Features

Reliable, Compact Ultrafast Lasers Escape the Lab

While several thousand femtosecond lasers can be found in research and development laboratories around the world, and hundreds of potential applications have been proposed, no ultrafast sources were used regularly in the industrial or medical world before 1997. This is because early ultrafast lasers were room-sized behemoths that required the attention of "laser jocks" to keep them aligned, tuned and running smoothly. This sad state of affairs is finally changing. While some suppliers are still...

Photonics Spectra, July 1998

Software Integration Enables Fast, Precise Telescope Design

Astrophysicists have studied gamma ray bursts for more than 25 years, but they are no closer to understanding them or determining their sources. These unpredictable bursts of gamma-ray photons come from all directions and are among the greatest...

Photonics Spectra, July 1998

Target Acquisition:

The criteria that the military uses to develop its targeting and surveillance imagers may be useful to those who are developing other types of imaging systems, such as microscopes, machine vision systems, consumer digital cameras and surveillance...

Photonics Spectra, July 1998

Absorption Spectroscopy Technique Provides Extremely High Sensitivity

Several important areas of modern technology require fast, accurate and convenient measurement of trace species concentrations in gaseous environments. Examples include reactive plasma processing, pollutant monitoring and semiconductor...

Photonics Spectra, June 1998

Holographic Storage: A Viable Alternative for Space?

As space missions venture further into the depths of the universe n and further away from Earth n engineers are pressed to come up with data storage systems that will prove more capable and more reliable. While holographic storage hasnit been chosen...

Photonics Spectra, June 1998

Lessons from Space:

The development of space-based ultraviolet astronomy began with the missions of deep-space sonders like Voyager, which allowed preliminary determination of UV spectra of remote stars. However, these methods remained largely unexploited because of...

Photonics Spectra, June 1998

Optical Morphology:

For many people, optics are but one of the many components that make up a system. They understand the specifications the optics must meet but, many times, they do not know nor are they concerned about the broader performance characteristics of the...

Photonics Spectra, June 1998

Photonics Helps Space Designers Battle Costs

Space agencies around the world are looking for ways to do more with less. In the US, NASA has spent the past few years emphasizing smaller, faster, cheaper missions. Since taking over as the agencyis director in 1992, Daniel Goldin has pushed...

Photonics Spectra, June 1998

Solid-State Lasers Join the Space Race

In the 60s and 70s, scientists had carte blanche to develop space instruments. However, in todayis cost-conscious space programs, laser designers look towards Earth and improving commercial technologies to meet cost guidelines and accomplish mission...

Photonics Spectra, June 1998

Telescope Analysis Yields Down-to-Earth Benefits

Astronomers and astrophysicists studying the nature of celestial objects require clear, sharp images collected by astronomical telescopes. To accomplish this, the engineers who design and build these instruments must ensure that light from the...

Photonics Spectra, June 1998

Terrestrial IR Imaging Benefits from Aerospace Programs

Infrared imaging systems are exploding into virtually every corner of the industrial workplace. Improved resolution, thermal sensitivity, ruggedness and portability of imager components have expanded the use of imaging systems, and a good many of...

Photonics Spectra, June 1998

Blue Lasers Meet Tough Commercial Requirements

Light-emitting diodes (LEDs) and laser diodes with wavelengths below the red ( Gallium nitride and other III-V nitride-based semiconductors have a direct band gap that is suitable for blue light-emitting devices. The band gap energy of aluminum...

Photonics Spectra, May 1998

Detector Choices:

Whether they need to image faraway stars, microscopic organisms or bottles on an assembly line, users of imaging systems face many choices: What type of light will work best? How does color play a role? Where should I position the camera? In...

Photonics Spectra, May 1998

Fiber Amplifiers Make Steady Gains

Since the early demonstrations in 1987, optical amplifiers based on rare-earth-doped fibers have been widely recognized as key devices for achieving high-performance, high-capacity and long-distance transmission on optical fiber networks. The...

Photonics Spectra, May 1998

Laser Diodes:

In recent years, the demand for high-power laser diodes, bars and arrays has grown rapidly. Most of the applications for these near-infrared devices can significantly benefit from a combination of higher output power and longer lifetime. In...

Photonics Spectra, May 1998

Modular Lasers Improve Amplifier Testing

The commercial availability of erbium-doped fiber amplifiers has fueled the explosive growth of dense wavelength division multiplexing optical networks. These multiplexed optical systems in turn place great demands on amplifier performance. This...

Photonics Spectra, May 1998

Nonlinear Optical Crystals Improve Lasers' Flexibility

Diode-pumped, solid-state laser sources started replacing gas and ion laser sources for commercial and laboratory applications about 10 years ago, and the trend is accelerating because of progress in two areas. First, more powerful, reliable laser...

Photonics Spectra, May 1998

Photodynamic Therapy Offers New Medical Treatments

For years now, doctors have used ultraviolet lamps to treat psoriasis and to kill airborne tuberculosis bacteria, and lasers have made deep inroads as "bloodless scalpels." Recently, however, the US Food and Drug Administration (FDA) approved a...

Photonics Spectra, May 1998

Software Eliminates Guess-Work from Coating Designs

The possibility of having true global optimization for a large number of variables such as in multi-layer thin film design, has been debated for decades. A true global optimization algorithm works for a variety of different applications to find the...

Photonics Spectra, May 1998

World's Largest Laser Shoots Photonics to a New Level

It's been called the most ambitious laser project ever, a nuclear weapon deterrence insurance policy, a portal into the heart of a star and a source for inexhaustible energy. Under construction at Lawrence Livermore National Laboratory, the National...

Photonics Spectra, May 1998

Diode Lasers Pinpoint Pollutants

Diode-lasers have experienced limited success as environmental monitors because polluting chemicals weakly absorb light at commercially available diode-laser wavelengths. Also, although diode lasers offer one of the fastest and most sensitive ways...

Photonics Spectra, April 1998

Eco-Optics:

Since the 1980s, people have grown more aware of their surroundings, the impact of industry on the environment, and the environmentally redemptive qualities of advanced technology. Whether it's a UV lamp optimized to detect mercury and other...

Photonics Spectra, April 1998

Fiber Optic Sensors Sniff Out Chemicals

Fiber Optic Sensors Sniff Out Chemicals

Photonics Spectra, April 1998

Flexible Controller Maintains Fiber Optic Polarization

For nearly 200 years scientists and engineers have worked to exploit the inherent polarization of a light wave for mankind's benefit. From cutting edge research in laser cooling and atomic-transition gravitational wave detection to much that we take...

Photonics Spectra, April 1998

Help Wanted!

Photonics companies complain about job applicants' poor preparation while research and educational institutions complain that industry is stealing their best prospects. What is happening to the photonics job market? Where have all the engineers...

Photonics Spectra, April 1998

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