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spectroscopy Features
2D Spectroscopy Simplified
The many forms of conventional or linear spectroscopy such as vibrational, electronic and terahertz all involve measuring light absorption or an emission signal as a function of wavelength to yield information about the structure of the sample being interrogated. In recent years, two-dimensional spectroscopy methods have been developed where the signal is plotted as a function of two different frequencies. This provides unique structural and dynamic information about samples, ranging from model...
Photonics Spectra, September 2017
Portable Spectroscopy and the Fight Against Food Fraud
Food fraud and adulteration is a serious and increasing problem with significant health and economic impacts. Although robust and sophisticated laboratory methods have been developed to detect fraud, the question of how that experience can be...
Photonics Spectra, August 2017
Interweaving Photonics Research, Industry
Laser World of Photonics provides a spotlight for promising newcomers, industry veterans and innovative companies. And with tens of thousands of people from countries around the globe attending the show, that spotlight is huge. In 2015, the biennial...
Photonics Spectra, June 2017
Demanding Applications Call for Reflective Objectives
Laser systems costs are falling, leading to their increased use in a host of demanding applications from machining to hyperspectral imaging. Often in these cases, a small, diffraction-limited spot size is required. When specifying a microscope...
Photonics Spectra, June 2017
Spectroscopy for the Masses
The past few years have seen an explosion in consumer adoption of connected and wearable devices, which has been good for photonics. In 2017, nearly 40 million consumers in the U.S. alone (roughly 30 percent of households) are expected to own...
Photonics Spectra, June 2017
DCS 2017 Brings Defense, Environment Into Focus
Changes in the nature of warfare in today’s high-tech world demand the most advanced tools for soldiers and others in the defense and security sectors. Environmental and health care segments are evolving, too, as an onset of innovative...
Photonics Spectra, April 2017
Spherical Lens Probes Open New Possibilities in Raman Spectroscopy
Since its inception in 1928, Raman spectroscopy has allowed scientists to see a chemical “fingerprint” of material. Using light, substances are identified by the way specific wavelengths interface with a sample and are scattered....
Photonics Spectra, February 2017
Breakthroughs Bring THz Spectroscopy, Sensing Closer to Mainstream
The terahertz (THz) electromagnetic spectrum (1 to 10 THz), sitting between the infrared wavelengths on the higher frequency side and microwaves on the lower frequency side, has unique and important properties. THz waves can pass through a number of...
Photonics Spectra, December 2016
Two-Dimensional MEMS Arrays Pave Way for Mobile Spectrometers
In the field of near-infrared (NIR) spectroscopy, a system that combines portability with the accuracy and functionality of high-performance laboratory systems would significantly enhance real-time analysis. The development of small handheld...
Photonics Spectra, October 2016
For Compactness and Ruggedness, Linear Variable Filters Fit the Bill
Spectroscopic optical applications have conventionally utilized dispersive elements such as diffraction gratings and, less commonly, prisms to separate light into its constituent wavelengths for spectral interrogation. Gratings have the advantage in...
Photonics Spectra, September 2016
Innovation in Surface Tracking Opens Doors to Raman Imaging Applications
Scientists dream of being able to probe variations in the chemical composition and structure of materials without any form of sample preparation. Raman spectroscopy, a noncontact, nondestructive analysis tool that yields information on the chemical,...
Photonics Spectra, September 2016
High-Performance UVC LEDs Driving Spectroscopy Innovations
UVC LEDs are fast becoming the technology of choice for designers developing a new breed of spectroscopy devices that are smaller, less costly and more energy-efficient, while still delivering precise, real-time measurements. With efficiency and...
Photonics Spectra, July 2016
New Indium Antimonide-Based IR Detectors Surpass Previous Limitations
Due to their high thermal sensitivity and favorable atmospheric transmission in the 3- to 5-µm spectral region, cameras based on InSb sensors have been used in traditional applications such as medium- to long-range surveillance, as well as for...
Photonics Spectra, April 2016
Through the Spectrum
1666 Sir Isaac Newton discovers that the sun’s white light could be dispersed into a continuous series of colors using an instrument he invented — now called the spectroscope — essentially beginning the science of spectroscopy. In...
Photonics Spectra, February 2016
Spectroscopy Heading Toward 'Fantastic Voyage'
When Sir Isaac Newton discovered that the white light from the sun could be dispersed into a continuous series of colors — a phenomenon he described as a “spectrum” — he essentially started the engine for the science of...
Photonics Spectra, February 2016
Top Solar Stories of 2015 from Photonics.com
Invisible Cloaking, Singlet Fission Set Solar on Fire in 2015 For decades researchers have been enchanted by the vast potential of photovoltaic (PV) tecnology as an alternative to fossil fuels. The rub: Solar-cell efficiencies have remained well...
Photonics.com, December 2015
Position, Position, Position
New standards could provide positioning and motion systems with higher dynamic path-following capabilities than existing and earlier systems. This may become critical for applications in precision metrology, manufacturing and others, where accuracy...
Photonics Spectra, October 2015
Photonics Meets Cultural Heritage
Conservation, reconstruction and authentication of artworks are all domains in which photonics plays a significant role. This article describes some of the most established applications of photonics in cultural heritage. We can say without doubt...
Photonics.com, September 2015
Advances in Micromechatronics Promote All-in-One Positioning Modules
Smart motion technologies can reduce system size and simplify integration, enabling smaller photonic instruments with full performance. Advances in microactuators, microelectronics and micromechatronics are enabling a new class of all-in-one...
Photonics Spectra, May 2015
Advances in Industrial Color Testing of Automotive Metallic Finishes
The measurement and characterization of lightness fluctuations, their scaling properties and their potential causes could help design low-noise industrial painting processes and help engineer innovative color and texture effects. The appearance of...
Photonics Spectra, April 2015
Spectroscopy: Going Small to Get the Whole Picture
Advances based on mobile technology are poised to revolutionize spectrometers. As spectrometers shrink in cost, size and power consumption, their applications grow. Proof can be found in agriculture, medicine and the arts, to name just three...
Photonics Spectra, March 2015
Trends in Modularity
Step by step, piece by piece, modularity is finding a home in optics, and microscopy and spectrometry applications are benefiting from the availability of modular systems. Furniture. Spacecraft. “Dungeons & Dragons” adventures. In...
Photonics Spectra, January 2015
Printed Optics Usher in New Era of Manufacturing
Additive manufacturing techniques are set to revolutionize fabrication and integration of optical products for a variety of applications, from lighting to imaging and beyond. Additive manufacturing techniques are creating a new awakening in optics...
Photonics.com, December 2014
OPO-Based Photoacoustic Spectroscopy Speeds Up Gas Analysis
High mid-IR output power from an optical parametric oscillator teams up with novel cantilever-enhanced photoacoustic measurement technology to offer extreme sensitivity and selectivity in industrial gas analysis and monitoring. The ultimate...
Photonics Spectra, December 2014
MWIR for Remote Sniffing and Locating of Gases
A mid-wave infrared camera visualizes methane gas cloud leaking from a drilling platform. Methane is a greenhouse gas that is significantly more damaging than carbon dioxide. When it leaks uncontrolled from industrial plants, it can easily escape...
Photonics Spectra, November 2014
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April 2024
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