FEATURES | Photonics.com

SPECIAL ANNOUNCEMENT

Interested in the future of spectroscopy?
Registration for the Photonics Spectra Spectroscopy Conference is open!

FEATURES

Laser Diodes: May 1, 1998 — 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 traditional AlGaAs laser diodes, the presence of aluminum in the active junction ultimately limits these performance parameters. In response to this problem, researchers developed "aluminum-free" laser diodes based on the InGaAsP material system. InGaAsP...

Photonics Spectra, May 1998

Modular Lasers Improve Amplifier Testing May 1, 1998 — 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 May 1, 1998 — 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 May 1, 1998 — 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 May 1, 1998 — 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 May 1, 1998 — 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 Apr 1, 1998 — 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, Apr 1998

Eco-Optics: Apr 1, 1998 — 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, Apr 1998

Fiber Optic Sensors Sniff Out Chemicals Apr 1, 1998 — Fiber Optic Sensors Sniff Out Chemicals

Photonics Spectra, Apr 1998

Flexible Controller Maintains Fiber Optic Polarization Apr 1, 1998 — 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, Apr 1998

Help Wanted! Apr 1, 1998 — 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, Apr 1998

Lidar Helps Unravel Environmental Mysteries Apr 1, 1998 — From coastal waterways to Alpine summits, light detection and ranging technology demonstrates how photonics helps to unravel the mysteries of complex environmental processes while sharpening our vision of seas and skies. In Sweden, for example,...

Photonics Spectra, Apr 1998

Pen-type Laser Systems Mark It All Apr 1, 1998 — During the past 20 years, several varieties of laser marking systems have emerged. Of special note, however, is the sales volume of pen-type laser markers, which has exceeded that of anyone's expectations since. Industry estimates suggest that more...

Photonics Spectra, Apr 1998

Are We On Exactly The Same Wavelength? Mar 1, 1998 — If you have been using lasers for more than a few years, you can recall the days when the wavelength specified on a commercial diode laser was a rough estimate rather than a precise figure. As recently as the early 1990s, it was not unusual to buy...

Photonics Spectra, Mar 1998

Aspheres Stand Up to the Test Mar 1, 1998 — As optical designers tackle the challenge of improving system performance while at the same time reducing overall package size, aspheric optics undoubtedly will grow in significance. Unfortunately, just because aspheres are easy to design does not...

Photonics Spectra, Mar 1998

Exploring the New Communications Network Mar 1, 1998 — Communications networks have a ravenous appetite for capacity, flexibility and reliability. For optical networks operating at data rates of up to 10 Gb/s, a full plate of components is needed for them to live up to their full potential. This...

Photonics Spectra, Mar 1998

How Small is Small? Mar 1, 1998 — Making a baseball is less an engineering feat than an art, in which neat hand-stitched seams act as paint against the cowhide that measures 9 to 9_ in. in circumfrence, according to the official rules of Major League Baseball. For manufacturers who...

Photonics Spectra, Mar 1998

Micromachining: Mar 1, 1998 — The miniaturization of mechanical and electronic components is revolutionizing modern biomedical, aerospace and industrial products. Laser micromachining is emerging as a critical manufacturing process for these components especially when dealing...

Photonics Spectra, Mar 1998

Photonic Techniques Pay Big Dividends in Process Control Mar 1, 1998 — In industrial processing it pays to know how much of what is in the mix, which is why on-line sampling of both the amount and type of chemical constituents is critical. Only in this way can an operator know whether the mix is correct, or...

Photonics Spectra, Mar 1998

Choosing Lighting for Industrial Imaging: A Refined Art Feb 1, 1998 — As industrial imaging has grown in popularity over the past few years, so has the awareness that lighting represents a large part of a vision system's success. The primary function of lighting in industrial imaging is to make an object's features of...

Photonics Spectra, Feb 1998

Fundamentals of Semiconductor Lasers Feb 1, 1998 — Semiconductor laser diodes are the smallest, most reliable, and most efficient light source known to man. For that reason, they are commercially interesting devices. Laser diodes have created multibillion dollar industries in optical communications...

Photonics Spectra, Feb 1998

Industrial Imaging: Feb 1, 1998 — Whether it is a simple $10,000 turnkey system, or a $500,000 customized job, the industrial imaging designer faces hundreds of device options, each with a host of suppliers waving fists full of conflicting claims. Dumb versus smart frame grabbers?...

Photonics Spectra, Feb 1998

Machine Vision's Next Frontier: Feb 1, 1998 — As the demands on machine vision continue to increase, the last year has seen two distinct phenomena: The rise of the so-called "smart camera" and the push to develop networked camera systems. These two megatrends in industrial vision are the result...

Photonics Spectra, Feb 1998

Microlasers: Feb 1, 1998 — The progressive replacement of gas lasers and flashlamp-pumped solid-state lasers by more efficient diode-pumped solid-state lasers started in laboratories more than a decade ago. Pumped with a 1-W CW diode laser, passively Q-switched microlasers...

Photonics Spectra, Feb 1998

All Solid-State Lasers: Jan 1, 1998 — All-solid-state sources are comparable to high-power diode lasers with a few notable exceptions: they provide improved mode quality, energy storage for Q-switched applications, mode-locking for ultrashort pulses and alternative wavelengths. Going...

Photonics Spectra, Jan 1998

<
1
2
3
...
141
142
143
144
145
146
147
148
>

(3,696 results found)

PHOTONICS MARKETPLACE

Search more than 4000 manufacturers and suppliers of photonics products and services worldwide:

LATEST HEADLINES

view all

Menu

Search