Terahertz and Mid Infrared Radiation: Detection of Explosives and CBRN (Using Terahertz)

Front Cover
Mauro F. Pereira, Oleksiy Shulika
Springer, Mar 10, 2014 - Technology & Engineering - 196 pages

The reader will find here a timely update on new THz sources and detection schemes as well as concrete applications to the detection of Explosives and CBRN. Included is a method to identify hidden RDX-based explosives (pure and plastic ones) in the frequency domain study by Fourier Transformation, which has been complemented by the demonstration of improvement of the quality of the images captured commercially available THz passive cameras. The presented examples show large potential for the detection of small hidden objects at long distances (6-10 m). Complementing the results in the short-wavelength range, laser spectroscopy with a mid-infrared, room temperature, continuous wave, DFB laser diode and high performance DFB QCL have been demonstrated to offer excellent enabling sensor technologies for environmental monitoring, medical diagnostics, industrial and security applications. From the new source point of view a number of systems have been presented - From superconductors to semiconductors, e.g. Detection of Terahertz Waves from Superconducting Bi2Sr2CaCu2O8+δ Intrinsic Josephson Junctions. The quest for a compact room temperature THz source and the recent advances in high power mid-IR QCLs lead to the development of a semiconductor THz source based on intracavity difference frequency generation. Furthermore, alternative electrically pumped THz sources based on the high emission efficiency predicted for polaritonic states in the ultra-strong coupling regime led to the demonstration of electroluminescent devices. Finally, antipolaritons in dispersive media were discussed and different aspects of the interaction of THz radiation with biomatter were presented.

 

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Contents

THz Hybrid MetamaterialLiquid Crystal Based Structures with Large Tunability
1
HighResolution THz Spectroscopy of Biomolecules and Bioparticles Concentration Methods
7
Intervalence THz Antipolaritons
19
Terahertz Aperiodic Multilayered Structure Arranged According to the Kolakoski Sequence
25
Population Dynamic in Quantum Cascade GaNAlGaN Photodetector Structure
33
Design of Metamaterial Photonic Crystals for Explosives Detection
39
New Type HighQ THz Planar AllDielectric Metamaterial
46
Bipolar THzLasing Structures Based on InAsGaSb Coupled Quantum Wells and Their Potential for Security Checks
53
The Fourier Transformed MIR Microspectroscopy to Reveal a Morphological and Spectral Markers of a Cervical Cancer Cells
103
THz Diffractive Optical Element for Passive Imaging
109
Intersubband Dispersive Gain Media
116
Recent Advances in IR Laser Diodes with High Power High WPE Single Mode CW Operation at RT
123
Characterization of Selenide Sulfide and Telluride Materials by Terahertz TimeDomain Spectroscopy
129
Ultrashort Electromagnetic Modes in the Low Frequency Region of the Spectrum in a Nanocylinder Array
134
Influence of MesaFabricationDependent WaveguideSidewall Roughness on Threshold Current and Slope Efficiency of AlGaAsGaAs MidInfrared Qu...
143
Midinfrared Laser Based Gas Sensor Technologies for Environmental Monitoring Medical Diagnostics Industrial and Security Applications
152

Coherent Quantum Control of Donor States in Silicon with THz and MIR Light A Route Towards a Scalable Quantum Computing Architecture
63
THz Biochemical Sensing Capabilities with High Performance SIW Based Sensor on nLVolume Liquids in Capillary
75
A Theoretical Study on Monitoring Explosives Degradation by Pentaerythritol Tetranitrate Reductase Using THz Spectroscopy
81
Area Dependence of Josephson Critical Current Density in Superconducting Bi 2 Sr 2 CaCu 2 O 8+d for Terahertz Emission
87
Inhomogenity of MicronSized Triple Terahertz Emitters Fabricated from Intrinsic Josephson Junctions in Single Crystal Bi 2 Sr 2 CaCu 2 O 8+δ
95
Computer Processing of Images Captured with a Commercially Available THz Camera at Long Distances
167
Transmission Subterahertz Imaging Utilizing MilliwattRange Nanosecond Pulses from Miniature CollapsingDomainBased Avalanche Source
175
SubTHz Spectroscopy for Security Related Gas Detection
188
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