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TECHNOLOGY SPECTROMETERS Tripping the light fantastic Rob Coppinger rounds up the latest products for analysing light

LTB Lasertechnik Berlin has expanded the scope of possible applications for its high-resolution Aryelle spectrometers by integrating the latest USB and GigE cameras. Mobile instruments as well as fast online process control can be realised with the Aryelle. Due to their particular optical design, these Echelle spectrometers provide the opportunity to measure a large

simultaneous wavelength range at a very high spectral resolution (20 pm). To be able to detect the typical number of approx. 50 grating orders with about 50,000 data points, the systems are equipped with image detectors. So far, such detectors had a maximum frame rate of 3 fps. The usage of the new GigE detectors in conjunction with the Aryelle spectrometers enables the recording of up to 12 images now. Intelligent software algorithms transform these images in full spectra.

Hamamatsu Photonics has announced the newest members of its TG series of mini-spectrometers, the C11713CA and C11714CA. The new TG spectrometer modules expand on the existing Hamamatsu range and adopt a high sensitivity, silicon back-thinned CCD image sensor, specially selected to match the optical arrangement. As well as having very high sensitivity, both modules offer a very narrow spectral resolution of 0.3nm, making them


appropriate for Raman spectroscopy applications. The C11713CA works over the spectral range of 500nm to 600nm, while the C11714CA operates from 790nm to 920nm. The C11713CA and C11714CA use Hamamatsu’s low etaloning back-thinned CCDs. Conventional back-thinned CCDs can exhibit etaloning in the near infrared region, which is problematic in certain Raman applications. Hamamatsu’s new series of back-thinned CCDs has been specifically designed to reduce this etaloning effect. This makes it suitable for a wider range of applications, with a particular emphasis on improving the performance of current Raman spectrometer systems.

Thermo Fisher Scientific has announced the launch of a new imaging attenuated total reflectance (ATR) accessory for improved spatial resolution and high speed data acquisition capabilities for Fourier transform infrared (FT-IR) chemical imaging applications. ATR is a popular sampling technique for infrared spectroscopy allowing direct contact sampling of solids and liquids without further preparation. The Thermo Scientific imaging ATR accessory has been designed to integrate with the company’s range of FT-IR microscopes to enable efficient, fast and reliable chemical imaging of challenging


samples. When coupled with an FT-IR microscope, ATR provides a unique capability for exploring the microscopic structure of heterogeneous samples. The Thermo Scientific imaging ATR accessory provides a more rapid method because it requires the sample to be compressed only once against an extended area of contact.

McPherson has supplied the Laboratory of Radiation Physics at Belgorod State University with a Model 248/310 spectrometer. The grazing incidence spectrometer will help the university’s spectroscopy in the soft x-ray and extreme vacuum ultraviolet wavelength region. Their research includes new x-ray sources in the 0.1 to 50nm region, methods for researching electron interactions with structured targets, and a new topic, guiding fast electrons.

Specialist optical spectroscopy company Gilden Photonics is offering Richardson Gratings products in the UK and Ireland, exclusively. This partnership expands both company’s product and service offering, allowing them to meet their customers’ technology needs in both OEM and end-user applications. Gilden Photonics spectroscopy systems feature spectral instruments and detectors controlled through software. Individual components include, a variety of different light sources for ultraviolet (UV), near infrared and far infrared; ruled and holographic diffraction gratings and photodetectors with a spectral coverage from UV to infrared.

Elliot Scientific has announced that the CRAIC Technologies flagship product – the 20/20 Perfect Vision UV-visible-NIR microspectrophotometer – is now offered with kinetic spectroscopy capabilities to scientists and researchers in the UK and Ireland. This time-resolved spectroscopy package allows the system to monitor the full range of spectra from a microscopic sample. Analysis of such samples can be done by

absorbance, reflectance and even optical emission from the deep UV to far into the near infrared spectral regions. Applications are numerous, from biological analysis to measuring the degradation of LED’s over time and much more. The ability to analyse the time resolved spectra of microscopic sample areas with multiple spectroscopic techniques makes the kinetic package for the 20/20 Perfect Vision the cutting-edge micro-analysis tool for any laboratory or manufacturing facility.

Optical and scanning probe microscope manufacturer Witec is offering its confocal Raman imaging system alpha300 R that offers the ability to acquire chemical information non-destructively. It has a spatial resolution down to the optical diffraction limit (~200nm). Because of the confocal setup, it is not only possible to collect Raman information from the sample

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