Quantum Electronics: A Treatise, Volume I: Nonlinear Optics, Part B is a three-chapter volume that covers several important applications of nonlinear optics, specifically those concerned with the generation of coherent light at new frequencies. The opening chapter discusses the most fundamental problems in the dispersion properties of second optical harmonic devices. The following chapter addresses the progress made in the understanding and operation of optical parametric oscillators. This chapter also presents the theory of these devices and their important operation characteristics. Optical parametric oscillator factors, such as efficiency, bandwidth, frequency stability, and gains, are also considered in this chapter. The last chapter describes the generation and detection of infrared radiation using nonlinear optics. This chapter also examines the most important features of nonlinear optics. This book will be of value to quantum electronics scientists, engineers, and researchers.