More Test & Measurement Articles

Light meter from Gigahertz-Optik can qualify solid state lighting


The BTS256-E light meter's sensor includes a precision photometric photodiode and diode array spectrometer to reduce uncertainty.

VCSEL simulation model from Agilent solves rack-to-rack optical interconnect issues


Santa Clara, CA--Agilent Technologies introduced a physics-based model for its opto model library that quickly and accurately solves the challenges posed by signal distortion in VCSELs.

NIST carbon-nanotube-slit spectrometer collects climate data


Boulder, CO--On September 29, 2013, a plastic balloon floated high in the skies over New Mexico carrying instruments to collect climate-related test data with the help of carbon nanotube chips made by NIST.

Piezosystem Jena's piezo stage has various footprints for integration into diverse microscopes


The PZ 250 SG Z-axis piezo elevator stage provides motion up to 250 micron in closed loop and 350 micron in open loop without mechanical play.

McPherson UV spectrometer measures vacuum ultraviolet spectral emission


The model 234/302 compact 200 mm focal length device has adjustable slits and operates at f/4.5.

Chlorophyll-fluorescence sorting can improve Capsicum pepper-seed quality

10/21/2013 Uşak and Ankara, Turkey and Wageningen, The Netherlands--In the interests of improving the quality and uniformity of Capsicum pepper-seed crops, Researchers from the University of Uşak, the University of Ankara, and the Wagenin...

Micron Optics displacement gauge uses fiber Bragg grating technology


The os5500 displacement gauge is designed for easy attachment to various substrates and makes measurements on metal, concrete, rock/stone, and other surfaces.

Yenista Optics introduces optical spectrum analyzer


The OSA20, a diffraction-grating-based optical spectrum analyzer, operates from 1250 to 1700 nm and uses a touch-sensitive display.

Bioimaging combo approach captures live images of growing tumors


A team of researchers from Massachusetts General Hospital and Harvard Medical School has developed an optical imaging tool that enables scientists to look deep within tumors and uncover their inner workings.

Zygo introduces a profiler for 3D imaging and measurement


The Nexview profiler is optimized for noncontact surface metrology of an extensive variety of samples and surfaces from the very smooth to the very rough.

Confocal microscopy method effective as diagnostic tool for sarcoidosis

10/15/2013 An international team of researchers used a corneal confocal microscope to photograph nerve fibers in layers of the cornea followed by computerized image analysis to quantify and predict severity of the symptoms of painful smal...

SWEPT-WAVELENGTH LASERS: Akinetic all-semiconductor swept lasers boost OCT image quality


Optical coherence tomography (OCT) image quality continues to improve thanks to advances in detection systems and improved light sources such as wavelength-tunable vertical-cavity surface-emitting lasers (VCSELs).

MOLECULAR IMAGING: QCLs enable mid-IR spectral image-based molecular detection


Using quantum-cascade lasers (QCLs) in a new standoff hyperspectral molecular-imaging system, Infrasign has successfully detected trace amounts of protein in serum over a wide area with high sensitivity and specificity.

Top Photonics News: New resources from Laser Focus World--October 11, 2013

10/11/2013 This week we announce new resources for our audience: a major upgrade to our online Buyer's Guide, the agenda for the 2014 Lasers & Photonics Marketplace Seminar, and the call for papers for Strategies in Biophotonics.

SPECTROSCOPY: VCSELs benefit TDLAS combustion measurements

10/11/2013 A team of researchers has developed and demonstrated the first tunable diode laser absorption spectroscopy (TDLAS or TDLS) system incorporating vertical-cavity surface-emitting lasers (VCSELs) for water (H2O) vapor measurements...

Bristol Instruments intros optical thickness gauge


The 157 Series optical thickness gauge measures absolute thickness of a single layer or multiple layers to an accuracy of ±0.1 μm, with repeatability of ±0.05 μm.

Photonics is edgy

10/10/2013 The most rewarding aspect of working on Laser Focus World is the fact that photonics science and technology are always evolving -- and we have the pleasure of writing and editing articles about the latest developments, trying t...
Two-dimensional ultrafast spectroscopy shows dynamics of nitrogen-vacancy centers in diamond

Two-dimensional ultrafast spectroscopy shows dynamics of nitrogen-vacancy centers in diamond

10/09/2013 Tucson, AZ--Using ultrafast laser spectroscopy, a team of researchers led by University of Arizona (UA) assistant professor Vanessa Huxter has have made the first detailed observation of how energy travels through diamonds cont...

Real-time detector for IV drugs could prevent life-threatening medical errors

10/08/2013 A team of researchers at the University of Illinois at Urbana-Champaign (UIUC) has developed a new optical device that can identify the contents of the fluid in an intravenous (IV) line in real time, offering a promising way to...
QCL-based spectrometer offer an automated way to quickly test drinking water

QCL-based spectrometer offers an automated way to quickly test drinking water

10/06/2013 Freiburg, Germany--Researchers from the Fraunhofer Institute for Applied Solid State Physics IAF have developed a quantum-cascade-laser (QCL)-based analysis apparatus that allows drinking water to be sampled automatically at th...

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