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Terahertz Spectroscopy for Explosive, Pharmaceutical, and Biological Sensing Applications
Terahertz (THz) radiation offers innovative sensing technologies that can provide information unavailable through other conventional electromagnetic... -
Terahertz Time-Domain Spectroscopy of Crystalline and Aqueous Systems
There is a fundamental difference between the dielectric spectra of crystalline systems as well as amorphous and liquid systems in the THz range.... -
Applied Terahertz Science: The Technology of the Future, and Always Will Be?
It is now over a decade since the first papers were published on Terahertz (THz) pulsed imaging. Much was then claimed for this field, and many... -
Terahertz Rays to Detect Drugs of Abuse
We have developed compact THz-wave parametric generators with different characteristics that operate at room temperature. One generates high energy... -
Terahertz Communications: A 2020 vision
We discuss basic considerations for potential short-range THz communication systems which may replace or supplement present WLAN systems in 10–15... -
Terahertz Emission from Semiconductors Excited by Ultrafast Laser Pulses
Various physical mechanisms leading to terahertz (THz) emission from semiconductor surfaces illuminated by femtosecond laser pulses are analyzed.... -
Development of Tagless Biosensors for Detecting the Presence of Pathogens
The vibrational modes corresponding to protein tertiary structural motion lay in the far-infrared or terahertz (THz) frequency range. These... -
Towards Superlattice Terahertz Amplifiers and Lasers
We describe our work towards THz sources which employ the “Bloch gain”, a stimulated-emission mechanism which has been predicted as early as 1971 to... -
Improvements to Electronic Techniques for Terahertz Spectroscopic Detection
Spectroscopic imaging with terahertz (THz) or submillimeterwave (SMM) sources holds great promise for both defense and dual-use applications, such as... -
Terahertz Detection of Illegal Objects
This paper describes the main parameters – contrast, spatial resolution, and thermal sensitivity – which define the performance of any stand-off... -
Systems Requirements for A Multi-Channel Terahertz Contraband Scanner
The direct use of terahertz (THz) spectral features in screening for explosives, drugs, and other contraband is limited since adjacent materials may... -
Guided Propagation of Terahertz Pulses on Metal Wires
We demonstrate a new waveguiding structure for terahertz (THz) radiation, in which broadband THz pulses are confined and guided along a bare metal... -
Molecular and Organic Interactions
We review a selection of recent technological advances in terahertz frequency time-domain spectroscopy. We discuss the coherent generation of... -
Challenges to Terahertz Counter-Terrorism and Security-Related Applications
Since early 2002, HMGCC has been monitoring developments in Terahertz (THz) technology in government, academia, and industry, as applied to... -
Terahertz Beam Interactions with Amorphous Materials
Terahertz (THz) time-domain spectroscopy (TDS) is used to study two types of amorphous materials: glasses and polymers. The theory of far-infrared... -
Superlattice and Other Negative-Differential-Resistance Devices: Current Status
The paper discusses and compares the concepts, performance potential, and most recent experimental results of both classical and novel active... -
Terahertz Generation by Multiplication
We report on the status of symmetric varactor diode multipliers for signal generation in the terahertz frequency range. The progress and basic... -
Continuous-Wave Terahertz Photomixer Systems for Real-World Applications
The terahertz (THz) region is beginning to be exploited for many “real world” applications. The development of pulsed photoconductive THz generation... -
Tailoring the Emission of Terahertz Quantum Cascade Lasers
For THz quantum cascade lasers to prove useful for applications, certain requirements for their spectral performance will have to be met. Here, we...