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Hybridizing Spectroscopic Techniques Feb 1, 2004 — Any given material can be characterized using a wide variety of spectroscopic techniques, each of which provides useful information. Depending on the material in question, of course, some methods are more effective than others. For example, fluorescence spectroscopy tends to work best on biochemical samples because it is a nondestructive method. However, the clever researcher realizes that a wider range of information can be collected from a sample by combining several measurement...
Photonics Spectra, Feb 2004
Laser Diode Manufacturers Turn Up the Power Feb 1, 2004 — By one estimate, the global market for high-power laser diodes could approach $450 million by 2006 (Figure 1). So it perhaps comes as no surprise that quite a few players have entered the market recently. To compete, they must accommodate...
Photonics Spectra, Feb 2004
Near-Field Scanning Optical Microscopy and Spectroscopy Advance Feb 1, 2004 — Although the rapid advance of scanning probe microscopy in the 1990s enabled routine imaging of unaltered samples at unprecedented nanoscale resolution, researchers still could not uniquely identify the chemical composition of materials and unveil...
Photonics Spectra, Feb 2004
Camera Technologies Advance and Expand Jan 1, 2004 — Users of detectors for all wavelengths of the spectrum have the same demands year in and year out: faster cameras, better resolution, improved sensitivity, smaller packages and easier-to-use software that will integrate seamlessly with a myriad of...
Photonics Spectra, Jan 2004
Carl Zeiss MicroImaging Wins Circle of Excellence Award Jan 1, 2004 — The ApoTome optical sectioning device from Carl Zeiss was designed to make it fast and easy to generate optical sections of biological fluorescence specimens. This optoelectronic add-on device for a fluorescence light microscope uses structured...
Photonics Spectra, Jan 2004
Novalux Wins Circle of Excellence Award Jan 1, 2004 — Novalux Inc. of Sunnyvale, Calif., developed its Protera 488 laser system as a solid-state replacement for the air-cooled argon-ion laser used in bioanalytical instrumentation. Its advantages over argon-ion include twice the lifetime, 1/100 the...
Photonics Spectra, Jan 2004
Semrock Wins Circle of Excellence Award Jan 1, 2004 — Using the latest advances in thin-film filter technology, Semrock Inc. of Rochester, N.Y., has combined its modern ion-beam sputtering, sophisticated designs and proprietary deposition control techniques to produce a single laser-grade mirror that...
Photonics Spectra, Jan 2004
Violet Diode Lasers See Broadened Application Base Jan 1, 2004 — The recent availability of GaN-based laser diodes, nurtured by a strong and flourishing LED market, has opened up a host of new applications. The optical storage market, essentially the raison d’être for this technology, is leading the way with a...
Photonics Spectra, Jan 2004
Lasers Target Chip Fabrication Dec 1, 2003 — In semiconductor manufacturing, the drive to pack more functionality into ever-smaller spaces will ultimately fuel more aggressive chip designs, necessitating use of new low-k dielectric materials, wafer-level packaging, increasingly complex device...
Photonics Spectra, Dec 2003
Solid-State Lasers Are Gunning for Argon-Ion's Place Sep 1, 2003 — Frequency-doubled diode lasers that produce blue light at or near 488 nm have emerged over the past couple of years, potentially affecting the multibillion-dollar instrumentation market based on the air-cooled argon-ion laser that has evolved over...
Photonics Spectra, Sep 2003
Colorimetry, Anatomical Studies Advance Aug 1, 2003 — Color vision has long fascinated scientists, providing topics for research in psychology and physics, as well as in anatomy, physiology and medicine. Substantial information has been gathered over more than 150 years, and with the development of in...
Photonics Spectra, Aug 2003
Hollow-Core Fibers Seek the 'Holey' Grail Aug 1, 2003 — Photonic crystal fibers are glass fibers with a fine array of airholes running down their length. They can exhibit photonic bandgaps, and the more-than-a-decade-old concept of using a two-dimensional bandgap to trap light in a hollow-core fiber is...
Photonics Spectra, Aug 2003
Laser Technology Targets Microelectronics Defect Detection Aug 1, 2003 — Using optical extension techniques, ArF lasers at 193 nm already produce features as small as 0.1 μm on today’s microchips. The challenges will only increase as the industry moves to the 0.07-μm technology node by 2005. While the number...
Photonics Spectra, Aug 2003
Optical Profiling Applications Expand Aug 1, 2003 — Optical profiling (white-light interferometry) is a noncontact technique for determining surface texture and shape, from nanometer-scale roughness through millimeter-scale step heights. The strengths of this method— high speed, a wide measurement...
Photonics Spectra, Aug 2003
Adaptive Optics Improves Multiphoton Imaging Jul 1, 2003 — In the years since Bio-Rad Laboratories Ltd. of Hemel Hempstead, UK, licensed the right to commercialize multiphoton microscopy systems from Cornell University in Ithaca, N.Y., turnkey multiphoton workstations have appeared in labs worldwide....
Photonics Spectra, Jul 2003
Automation Adds to the Microscopy Mix Jul 1, 2003 — Some researchers are legendary for their lab capability, easily able to find needles in haystacks. Others who complain that they were never good in the lab appreciate simple-to-operate equipment. Although the concept of point-and-shoot microscopy...
Photonics Spectra, Jul 2003
Focusing on TIRF Microscopy Jul 1, 2003 — Applications from cell dynamics and single-molecule events to vesicle and protein tracking are all within the realm of total internal reflection fluorescence (TIRF). The technique is so named because it involves total internal reflection of the...
Photonics Spectra, Jul 2003
Imaging Center Offers the Latest Microscopy Techniques Jul 1, 2003 — Scientists study samples, such as microscopic detail of cellular tissue from a mouse kidney and live yeast cells, for obvious reasons. By examining these, they can begin to understand the inner workings of cellular systems, which could lead to the...
Photonics Spectra, Jul 2003
Lasers Target Glass Marking Jul 1, 2003 — As do many materials suppliers, manufacturers of glass products stand to benefit from two-dimensional bar codes inscribed on their products. These marks provide a means to determine a product’s revision level, to deter counterfeiting or to track its...
Photonics Spectra, Jul 2003
Microscopy Solutions Accelerate Research Jul 1, 2003 — Plug-and-play microscopy is a fairly new concept that has some researchers shaking their heads. Microscopes are complex pieces of equipment, and getting the best image of the sample is anything but easy. Help is at hand, however, thanks to recent...
Photonics Spectra, Jul 2003
New Tools Add Precision to Live-Cell Fluorescence Jul 1, 2003 — Researchers using live-cell fluorescence often have to examine samples repeatedly to observe changes over time. Viewing multiple samples in three dimensions as a time-lapse movie is common in labs such as the Nikon Imaging Center at Harvard Medical...
Photonics Spectra, Jul 2003
Piezoresistive Sensors Facilitate High-Speed Nanopositioning Jul 1, 2003 — Science and industry requirements are fueling demand for smaller and higher-speed nanopositioners. Capacitance sensors, which are used in many nanopositioners, may pose problems when used with either miniaturized or faster nanopositioning systems,...
Photonics Spectra, Jul 2003
Thin-Film Filters Come of Age Jul 1, 2003 — Multilayer optical thin-film filters play a critical role in applications ranging from biomedical and analytical instrumentation to advanced laser systems. Although many of these applications still rely on outdated filter technology, there is light...
Photonics Spectra, Jul 2003
Perfect Mirrors Extend Hollow-Core Fiber Applications Jun 1, 2003 — Photonic bandgap fibers have been the subject of active research for several years. One result reaching commercialization is omniguide fiber, a low-loss waveguide that can transport light of almost any wavelength. The fundamental breakthrough...
Photonics Spectra, Jun 2003
Picturing the Perfect CMOS? Jun 1, 2003 — With larger pixel sizes, improved noise reduction, bigger arrays and other techniques, vendors are producing CMOS sensors that rival CCDs. They offer lower power consumption, greater readout speed, smaller system size and other desirable...
Photonics Spectra, Jun 2003
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