Alfy Riddle, IEEE Microwave Magazine
"The author provides a careful explanation of basic concepts and their associated mathematical formulations. Attention is then given to key features which emerge in the terahertz regime. Lewis addresses the reader directly, which is a novel and refreshing way to present the material. This book is suitable for self-study, so it may also be useful for those outside the target audience. Its utility is enhanced by the fact that the author has succeeded in capturing the essence of the topic in fewer than 300 pages."
K. Alan Shore, Bangor University for Optics & Photonics News