K.-E. Peiponen: Professor of optical material research from 1993 in the Department of Physics and Mathematics in University of Joensuu Professor of optical materials research from 1.1.2010 in Department of Physics and Mathematics in University of Eastern Finland A. Zeitler: -University Lecturer, Department of Chemical Engineering and Biotechnology, University of Cambridge, UK, Research Fellow, Gonville and Caius College, Cambridge, UK, Group leader of the Terahertz Applications Group, Department of Chemical Engineering and Biotechnology, Cambridge, UK M. Kuwata-Gonokami: 1998-present: Prof., Graduate school of Engineering, The Univ. of Tokyo 2010-present: Prof., Department of Physics, The Univ. of Tokyo 2001-2008: Director, Quantum-Phase Electronics Center, School of Engineering, The Univ. of Tokyo 2005-2007: Executive Advisor for the University President, The Univ. of Tokyo 2008-present: Director, Photon Science Center, The Univ. of Tokyo 1997-2002: Director, Cooperative Excitation Project, ERATO (JST) 1993, 1994: Consultant, AT&T Bell Laboratories, Murray Hill 1997-present: Adjunct Professor, College of Optical Sciences, The University of Arizona

Presenting the state of the art in Terahertz spectroscopy, this book describes the basics, reviews the highlights of scientific research in the field of THz science and provides an comprehensive overview of the field and future directions of research.

Presents the state-of-the-art of Terahertz spectroscopy

Transmission, reflection, refraction and scattering of Terahertz radiation.- Optical constants and dispersion relations in THz spectroscopy.- Scattering effects.- Converging Terahertz beam vs. plane wave.- Signal Processing - Wavelet Transform.- Signal Processing - Fractional Fourier transformation and spectrogram in signal processing of Terahertz pulses.- Terahertz Spectroscopy.- Crystalline and non-crystalline solids.- Liquids and Biomolecules.- Ellipsometry and active polarization control of Terahertz waves.- ATR sensing at terahertz frequencies.- Pump-probe spectroscopy.- Liquid crystals.- Waveguide spectroscopy.- Condensed matter physics.- Assignment of vibrational modes in crystalline materials.- On-chip pulsed Terahertz spectroscopy.- Nonlinear terahertz spectroscopy.- Terahertz Imaging.- Far-field / Near-field.- Biomedical Imaging.- Pharmaceutical imaging.- Terahertz tomography.- Security.- Artists' materials characterization.- Interesting Physics at Terahertz Frequencies.- Plasmonic structures.

This book presents the state-of-the-art of Terahertz spectroscopy. It is a modern source for a beginners and researcher interested in THz spectroscopy. The basics and physical background of THz spectroscopy and technology are explained, and important applications are described. The book presents the highlights of scientific research in the field of THz science and provides an excellent overview of the field and future directions of research. Over the last decade the field of terahertz spectroscopy has developed into one of the most rapidly growing fields of spectroscopy with large impact across a wide range of scientific disciplines. Due to substantial advances in femtosecond laser technology, terahertz time-domain spectroscopy (THz-TDS) has established itself as the dominant spectroscopic technique for experimental scientists interested in measurements in this frequency range. In solids and liquids terahertz radiation is at resonance with both phonon modes and hydrogen bonding modes which makes it an ideal tool to study the interaction between molecules in a unique way, thus opening a wealth of opportunities for research in physics, chemistry, biology, materials science and pharmaceuticals. This book provides an easy access to scientists, engineers and students alike who want to understand the theory and applications of modern terahertz spectroscopy.