The book “Problems of coherent and nonlinear optics” by Kozlov is a fascinating and deep dive into the world of optics, which will be a real discovery for students, graduate students and researchers interested in the physics of light and its interaction with matter. In this work, the author not only highlights the basic concepts of coherent and nonlinear optics, but also offers the reader a unique view of modern problems and achievements in this area. Kozlov, known for his scientific works and research, masterfully combines theory and practice, which makes his book an indispensable tool for anyone who seeks to understand the complex processes occurring in optical systems. The book deals with key topics such as light coherence, interference, diffraction, and nonlinear effects arising from the interaction of light with various materials. The reader will be able to learn about the latest achievements in the field of laser technology, optical communication and photonics, which makes the book relevant and useful for specialists and students studying physics, engineering and related disciplines. This book will be of interest to both undergraduate and graduate students, as well as practicing scientists and engineers working in the field of optics and photonics. If you are passionate about science and want to deepen your knowledge about the behavior of light, the “Problems of coherent and nonlinear optics” will be a real find for you. Kozlov uses accessible language and illustrative examples, which allows even those who are just starting their way in this area to easily assimilate complex concepts. The topics raised in the book concern not only theoretical aspects, but also practical applications of coherent and nonlinear optics in modern technologies. Kozlov focuses on the importance of optical technologies in our lives and their impact on various fields, from medicine to telecommunications. This book is not just a textbook, but a real encyclopedia of knowledge that will help the reader to understand how optics shapes our perception of the world and how it can be used to solve actual problems. Kozlov’s style is distinguished by clarity and logical presentation, which makes his books easy to understand. He masterfully uses real-life examples to illustrate complex scientific concepts, which allows the reader not only to understand the theory, but also to see its practical application. If you are familiar with his other works, such as Basics of Optics or Laser Technology, then you already know how fascinating and informative he writes. Thus, “The Problems of Coherent and Nonlinear Optics” is not just a book, but a whole world of knowledge waiting to be discovered. It will become an indispensable assistant for all who seek to immerse themselves in the fascinating world of optics and understand how light can change our lives. Don’t miss the opportunity to expand your horizons and learn more about how coherent and nonlinear optics shape the future of science and technology.