White Papers

Spirit Sampling for Counterfeit Detection and Brand Authentication

By Nick Barnett. Ph.D
7 November 2014

White Paper Lead ImageIncidents of whisky and spirits counterfeiting pose serious health risks to citizens and potential revenue loss to brand owners. The Ocean Optics Spirit Sampler can help to combat increased sales of illicit spirits by providing a means of counterfeit detection and brand authentication in the field. The success of such a screening device depends on the reproducibility of measurements from sample to sample and from device to device. This application note describes measurements performed to demonstrate Spirit Sampler device reproducibility and outlines some of the instrument’s brand management software features.

How is laser Power/Energy measurement affected by incidence angle?

By Mark Slutzki
29 October 2014

White Paper Lead ImageModern laser applications demand ever-increasing accuracy in the measurement and control of the laser beam. Various types of sensors and instruments are in use today, the choice depending on the type of measurement needed. However, even given the correct choice of equipment, there are measurement conditions that can seriously affect the accuracy of the readings obtained if not correctly taken into account.

All About Coatings

By Edmund Optics
14 October 2014

White Paper Lead ImageIn every realm of physical science, surface properties dictate much of the interaction between an object and its environment. This is true for optics as well. Although the bulk properties of glasses certainly influence an optic’s interaction with light, the shape and smoothness of the surface are the primary determinants of the way a lens or mirror modifies the propagation of light. In addition to surface shape and quality, the coatings on an optical surface strongly affect an optic’s interaction with light. Specifically, coatings significantly modify the behavior of light at different wavelengths. Nearly every modern optical system depends on effective optical coatings.

Using the full spectrum for Raman: from UV to NIR

By Prof W R. Browne, Dr A. Draksharapu, Stratingh Institute for Chemistry, NL & Dr E. Illy Cobolt AB
26 September 2014

White Paper Lead ImageThe ”inelastic scattering of light”, or Raman effect, was observed in practice for the first time in 1928 by C.V. Raman for which he was awarded the Nobel Prize in 1930. It is only in the last two decades, however, that Raman spectroscopy has begun to realize its potential as an almost universally applicable analytical technique from materials and life sciences applications to point of care analysis. This is primarily thanks to the availability of compact laser sources, high sensitivity cameras and high resolution compact spectrometers.

Technology Features

Electro Optics coverPhotonc sensor to combat TB

A lab-on-chip device, being designed as part of a European project, promises to reduce the cost of diagnosis tuberculosis dramatically – and save many lives in the developing world. Greg Blackman speaks to Wim Van Roy at Imec, one of the coordinators of the project

Electro Optics coverKeeping count on light

Highly sensitive detectors are enabling techniques like quantum cryptography and forms of flourescence spectroscopy. Tom Eddershaw investigates the technology for detecting individual photons

Electro Optics coverSolar research leads to laser discovery

Perovskites are being tipped as materials that will revolutionise solar power. Now, an Oxbridge team of scientists have used its luminescent properties to make a laser from the mineral. Greg Blackman speaks to Dr Felix Deschler and Michael Price of Cambridge's Cavendish Laboratory, who worked on the project

Electro Optics coverLasers in profile

Greg Blackman gets to grips with the various methods for analysing high-power lasers, including a novel method that calculates power according to the weight of the beam

Press releases

Composer gas select firmware

26 November 2014
ACCESSORIESComposer gas select firmware
Alicat Scientific has expanded its Gas Select firmware to include a library of up to 130 preloaded gases, referenced to NIST Prop 9, and an industry-first utility for defining mixed gas compositions
Alicat

Chromatis for GDD measurements

26 November 2014
ANALYSIS, TEST AND MEASUREMENT
Altechna Metrology laboratory has started providing group delay dispersion (GDD) measurements in optical components in the range from 500 nm to 1650 nm
Altechna

G12430 InGaAs photodiode arrays

26 November 2014
SENSORS AND DETECTORSG12430 InGaAs photodiode arrays
Hamamatsu Photonics introduce a new range of InGaAs photodiode arrays, the G12430 series, designed for NIR spectroscopic analysis. The company has also unveiled a miniature spectrometer range, the C11697MB
Hamamatsu Photonics

Count photon counters

26 November 2014
SENSORS AND DETECTORSCount photon counters
The dynamic range of single photon detectors is an important parameter. LASER COMPONENTS has reduced the dead time of the COUNT photon counters from 55ns to 42ns, resulting in a maximum count rate of more than 23MHz
Laser Components

LMM-274

26 November 2014
SENSORS AND DETECTORSLMM-274
The new LMM-274 from InfraTec now offers a low-power detector with four channels, so that three gases can be measured simultaneously and a reference channel is also available
InfraTec

GL Spectis 6.0

26 November 2014
SPECTROSCOPYGL Spectis 6.0
GL OPTIC has developed a robust, laboratory-grade product engineered for large scale purposes: the GL SPECTIS 6.0
GL Optic