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FEATURES
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 for granted today such as displays compact disks, cameras -- regulating the polarization of light has been a crucial part of the game. Most polarization control techniques have targeted manipulation of light beams in free space. It was only a few...
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
Aspheric Lenses:
Jan 1, 1998 — In the past, high precision aspheric optics have been produced on a "one-off" basis using highly skilled and labor intensive processes. Today, manufacturers of advanced semiconductor processing equipment are looking to incorporate aspheric surfaces...
Photonics Spectra, Jan 1998
Diode Lasers:
Jan 1, 1998 — For years, scientists have searched for the secret to cheap, compact blue lasers for high-density optical storage. Blue diode lasers' short wavelength offers a small focused spot size, which would maximize the density and transfer rate of stored...
Photonics Spectra, Jan 1998
Fiber Gratings:
Jan 1, 1998 — An exciting recent development in fiber-optic technology is the ability to holographically imprint diffraction gratings into the core of an optical fiber using intense UV light. Today the most important communications application for fiber gratings...
Photonics Spectra, Jan 1998
High Harmonics Could Revolutionize Optical Science
Jan 1, 1998 — The generation of very-short coherent x-ray pulses can be achieved using high-field effects, where a super-intense, ultrashort optical pulse nonlinearly interacts with a medium. This scheme is referred to as high-harmonic generation, and has...
Photonics Spectra, Jan 1998
High Power Laser Optics:
Jan 1, 1998 — As power levels rise above 5 kW, optics become critical to the performance and reliability of laser systems. These applications demand consistent laser-quality ZnSe that is defect free and has bulk absorption at or near theoretical values. Other...
Photonics Spectra, Jan 1998
High-speed imagers come to the desktop
Jan 1, 1998 — HHigh-speed video for motion analysis has gained wide acceptance over the past 15 years. The technolgy grew despite slow and arduous processes on computers built for other purposes. High-speed cameras that plug in directly to a PC could alleviate...
Photonics Spectra, Jan 1998
Imaging Boards:
Jan 1, 1998 — To say that the world of imaging is evolving is an understatement in the least. Manufacturers will continue to migrate away from dedicated systems for high-end applications. This movement is only possible because high-performance processing is...
Photonics Spectra, Jan 1998
IR diode lasers boost telecom, material industries
Jan 1, 1998 — Improvements to single- and multimode diode lasers have produced devices that are well suited for a diverse set of applications. During the past several years, diode lasers have achieved higher powers and higher reliabilities over an increasingly...
Photonics Spectra, Jan 1998
Laser Diodes:
Jan 1, 1998 — The small size, high reliability, excellent beam quality, low price and negligible operating costs of diode lasers have made them today's most popular laser. High power devices promise to replace many other laser types, while enabling more...
Photonics Spectra, Jan 1998
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