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Tag: Terahertz Ordering

The use of the terahertz region is in the headlines at present with its ability to screen passengers at airports, but it has important uses in the analytical field as well. This article reviews the latest research on proteins and peptides using THz-TDS, p-germanium lasers (75–85 cm–1) and far-infrared Fourier transform spectroscopy below 350 cm–1.

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A compact Terahertz spectroscopy/imaging system with the ability to select between the two on demand. In spectroscopy mode, the instrument can easily be switched between transmittance, reflectance or ATR. In imaging mode, the thickness and/or interface adhesion of coating films of tablets are represented in 1D, 2D or 3D. A process monitoring module will be available soon.

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Toptica has presented its compact, frequency-domain terahertz spectrometer. The system combines the company's TeraBeam, a highly integrated two-colour diode laser, with newly developed InGaAs/InP emitter and detector technology from the Fraunhofer Heinrich- Hertz Institute. The new cw THz system features a fast scan option, which reduces the acquisition times and acquires a complete THz spectrum in less than a minute. Making use of integrated DFB laser diodes and fibre components, the laser provides 30 mW per two-colour output and is therefore suited to the power requirements of the cw THz emitters and detectors. The emitter uses a high-bandwidth photodiode with an integrated waveguide structure and provides output levels in the microwatt range. The receiver employs an InGaAs photo­conductor and achieves good SNR values up to 80 dB. The modules are fully packaged with SM/PM fibre pigtails.

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TeraView has appointed LOT-Oriel as its exclusive agents for Germany, France, Switzerland, Austria and Italy. www.teraview.com

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Newport's Spectra-Physics Lasers Division has introduced an expanded portfolio of ultrafast laser products, including two ultrafast amplifers, the 4 W Spitfire Pro XP and the 3.5 W Solstice. The 4 W Spitfire Pro XP regenerative amplifier outputs < 35 fs pulses at 4 W average power at 1 kHz, 5 kHz or 10 kHz. The 3.5 W Solstice one-box amplifier generates 3.5 W average power at 1 kHz, 5 kHz or 10 kHz. The beam quality and pulse intensity make these amplifiers suitable for advanced scientific applications such as time-resolved spectroscopy, terahertz generation, coherence control and high-harmonic generation.

Newport Spectra-Physics Issue: 21/01 RSN: 113
Picometrix has received two new terahertz contracts from the US Air Force totalling $850,000 for development of a higher power THz transmitter for surface and gas spectroscopy applications to work with the T-Ray 4000 system, and a Phase I SBIR contract for development of semiconductor material capable of increasing THz power. www.picometrix.com
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T-Ray Science has licensed a terahertz detection technology from the Massachusetts Institute of Technology (MIT) which enables detection of continuous wave THz radiation. www.t-rayscience.com
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TeraView has conducted successful proof of principal for high-speed measurements of coating thickness on tablets applicable to on-line tablet inspection. The non-contact, non-destructive technique may also be extended to on-line measurement of other key product attributes such as coating or core density tablet delamination and many other parameter's characterising the performance of drugs. This capability opens up the opportunity for deployment of terahertz sensors in non-destructive tablet inspection to ensure that pharmaceutical products remain within the specifications necessary to ensure therapeutic efficacy and drug performance.Teraview LimitedIssue: 20/02 RSN:

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TeraView says that its terahertz imaging and spectroscopy products could be employed to help regulatory authorities, law enforcement agencies and industry screen for counterfeit drugs. www.teraview.com
Advanced Photonix has announced that its subsidiary, Picometrix, has received orders for its T-Ray 2000 terahertz system from the four major defence and leading university application development labs around the world. The combined orders total slightly over $1million. www.advancedphotonix.com
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Toptica has appointed Howard Potter as their direct representative for UK and Ireland. www.toptica.com

Philip F. Taday and David A. NewnhamTeraView Limited, 302/304 Cambridge Science Park, Milton Road, Cambridge, CB4 0WG, UK. E-mail: philip.taday@teraview.com

Tags: Terahertz