Far-Infrared Properties of Solids

This book provides an account of modern aspects relating far infrared radiation to properties of solids; it encompasses both theoretical and experimental considerations. Written at the gradu- ate level, it attempts a threefold purpose; an indication of the breadth of the subject, an in-depth examination of important areas, and reference material to complement a text for a course. The treatment and organization of material here is compatible with a preceding volume of this series on 'Optical Properties of Solids.' Chapters 1-6 present material concerned principally with experimental considerations necessary to the carrying out of meas- urements in the far infrared spectral region. They also serve to provide considerable introductory material for the remaining chap- ters which deal with various areas that offer theoretical treat- ments utilizing and understanding far infrared properties of solids. Several lectures presented at the Institute could not be in- cluded in this book for two reasons: (i) Final versions of the lecture notes suitable for publication never arrived from several lecturers; (ii) Some materials were deliberately left out fro~ this book as they were also presented at an earlier NATO Institute and form part of a preceding volume edited by us in this series. In particular, it is recommended that Chapters 14 and 15, viz., in- frared and Raman spectra due to lattice vibrations by S. S. Mitra and impurity induced lattice absorption by L. Genzel in 'Optical Properties of Solids'* be read concurrently with the present volume.