This book is unique in that it combines for the first time the infrared detectors and infrared lasers and emitters in one volume. It is merely a step, however, in a very fast-changing field, toward achieving an understanding of novel structures that can be used for high-performance infrared detectors, imaging arrays, infrared lasers and sources. Internationally-known experts discuss recent advances in materials structures, processing and device performances, with presentations crossing materials and discipline boundaries. Recent investigations based on III-V, II-VI and IV bulk semiconductors, quantum wells, and superlattices for long-wavelength infrared detectors, emitters, sources and materials are featured. Topics include: antimonide-related materials and devices; quantum wells and devices; quantum infrared detectors; HgCdTe - materials, devices and processing; nonlinear and parametric oscillator material; interdiffusion in heterostructures and related topics.