Terahertz (THz), Mid Infrared (MIR) and Near Infrared (NIR) Technologies for Protection of Critical Infrastructures Against Explosives and CBRN

Table of Contents

Part I State of the Art in sensors for the protection of critical infrastructures

1 Sensor Data Fusion and Autonomous Unmanned Vehicles for the Protection of Critical Infrastructures..........................................................................................10 Konstantions Ioannidis, Georgios Orfanidis, Marios Krestenitis, Stefanos Vrochidis and Ioannis Kompatsiaris

Part II Beyond QCLs, ICLs and Superlattices: competing technologies for detection of explosives and CBRN

2 High Power, Widely Tunable, and Beam Steerable Mid-infrared Quantum Cascade Lasers......................................................................................................22

3 Broadband terahertz gas spectroscopy through multimode self-mixing in a quantum cascade laser.............................................................................................35

Y. J. Han, J. Partington, R. Chhantyal-Pun, M. Henry, O. Auriacombe, T. Rawlings, L. H. Li, J. Keeley, M. Oldfield, N. Brewster, R. Dong, P. Dean, A. G. Davies, B. N. Ellison, E. H. Linfield and A. Valavanis

4 Crucial aspects of the device processing of quantum cascade lasers.......................44

Szerling A, Kosiel K, Prokaryn P, Szymański M, Wasilewski Z, Pluska M, Sakowicz M

5 Broadband gas QEPAS detection exploiting a monolithic DFB-QCL array............59

Marilena Giglio, Andrea Zifarelli, Pietro Patimisco, Angelo Sampaolo, Giansergio Menduni, Arianna Elefante, Romain Blanchard, Christian Pfluegl, Mark F. Witinski, Daryoosh Vakhshoori, Frank K. Tittel, and Vincenzo Spagnolo

6 Global optimization methods for the design of MIR-THz QCLs applied to explosives detection..................................................................................................71

Jelena Radovanovic, Nikola Vukovic, and Vitomir Milanovic

Part III Superlattices and other technologies for GHz-THz sensing

7 Non-Destructive testing THz systems: fast postal scanner case study.....................86

M. Sypek and J. Starobrat

8 Recent advances in superlattice frequency multipliers.......................................99

Yuliia Shevchenko, Apostolos Apostolakis, Mauro F. Pereira

9 Solid-State Millimeter-Wave through Terahertz Transceivers.......................... 115

Eric W. Bryerton

10 Transmission and reflection characteristics of textiles in the Terahertz range......125

Palka N, Pawlinska E, Szustakowski M, Walczakowski M, Czerwinska E, Ciurapinski W, Jodlowski L, Kowalski M, Zagrajek P, and Marek Zyczkowski

11 Transition between localized and delocalized terahertz conductivity in modulated nanostructures studied by Monte-Carlo calculations..........................................136

Hynek Němecl and Petr Kuzell

12 THz Sources and Detectors Fabricated from High Temperature Superconductors....................................................................