CLEO: 2014 - Special Symposium in Memory of James P. Gordon

René-Jean Essiambre, General Co-Chair and an co-organizer of this special symposium highlights the panel of distinguished speakers including several Nobel Laureates that will honor the memory of James P. Gordon at CLEO: 2014.

The Bartlett PhD Conference 2014 - Tiphaine Bardon (UCL) Oral Presentation

Tiphaine Bardon from University College London (UCL), who TeraView are currently hosting, recently had an abstract with the title: "Undercover investigation of documents with terahertz", accepted for an oral presentation at The Bartlett PhD Conference that was held on the 15th of April. 

The Presentation was filmed and is now available to view on the Bartlett facility Youtube channel. 

https://www.youtube.com/watch?v=nVDpZs1-P7Q

"Undercover investigation of documents with terahertz" full abstract:
http://terahertzspectroscopyandimaging.blogspot.co.uk/2014/04/the-bartlett-phd-conference-2014.html

TeraView at CLEO: 2014

TeraView Will be attending CLEO: 2014 

CLEO, 8th - 13th June 2014:
San Jose Convention Center
San Jose - CA 
United States 


CLEO: 2014 - Well-known for its world-renowned peer-reviewed program, CLEO unites the field of lasers and electro-optics by bringing together all aspects of laser technology and offers high-quality content featuring break-through research and applied innovations in areas such as ultrafast lasers, energy-efficient optics, quantum electronics, biophotonics and more.


If you would like to pre-arrange a meeting, please e-mail Dr. Phil Taday.

Chemometrics Applied to Quantitative Analysis of Ternary Mixtures by Terahertz Spectroscopy

Josette El Haddad , Frederick de Miollis , Joyce Bou Sleiman , Lionel Canioni , Patrick Mounaix , and Bruno Bousquet

Abstract

Chemometrics was applied to qualitative and quantitative analyses of terahertz spectra obtained in transmission mode. A series of mixtures of three pure analytes, namely, citric acid, d-(−)fructose, and α-lactose monohydrate under various concentrations, was prepared as pressed pellets with polyethylene as binder. Then, terahertz absorbance spectra were recorded by terahertz time domain spectroscopy and analyzed. First, principal component analysis allowed one to correctly locate the samples into a ternary diagram. Second, quantitative analysis was achieved by partial least-squares (PLS) regression and artificial neural networks (ANN). The concentrations were predicted with values of relative mean square error lower than 0.9% for the three constituents. As a conclusion, chemometrics was demonstrated to be very efficient for the analysis of the ternary mixtures prepared for this study.

This study was performed using TeraView's TPS spectra 3000 system. (TeraView, Cambridge, UK)

Full Article: http://pubs.acs.org/doi/abs/10.1021/ac500253b

Photoinduced active terahertz metamaterials with nanostructured vanadium dioxide film deposited by sol-gel method

Yaxin Zhang, Shen Qiao, Linlin Sun, Qi Wu Shi, Wanxia Huang, Ling Li, and Ziqiang Yang 

Abstract

Applying the photoexcitation characteristics of vanadium dioxide (VO₂), a dynamic resonant terahertz (THz) functional device with the combination of VO₂ film and dual-resonance metamaterial was suggested to realize the ultrafast external spatial THz wave active manipulation. The designed metamaterial realizes a pass band at 0.28–0.36 THz between the dual-resonant frequencies, and the VO₂ film is applied to control the transmittance of the spatial THz wave. More than an 80% modulation depth has been observed in the statics experiment, and the dynamic experimental results illustrate that this active metamaterial realizes up to a 1 MHz amplitude modulation signal loaded on a 0.34 THz carrier wave without any low noise amplified devices. The electromagnetic properties and photoinduced dynamic characteristics of this structure may have many potential applications in THz functional components, including modulators, intelligent switches, and sensors.

This study was performed using TeraView's TPS spectra 3000 system. (TeraView, Cambridge, UK)

Full Article: http://www.opticsinfobase.org/oe/fulltext.cfm?uri=oe-22-9-11070&id=284315