This book systematically introduces the single frequency semiconductor laser, which is widely used in many vital advanced technologies, such as the laser cooling of atoms and atomic clock, high-precision measurements and spectroscopy, coherent optical communications, and advanced optical sensors. It presents both the fundamentals and characteristics of semiconductor lasers, including basic F-P structure and monolithic integrated structures; interprets laser noises and their measurements; and explains mechanisms and technologies relating to the main aspects of single frequency lasers, including external cavity lasers, frequency stabilization technologies, frequency sweeping, optical phase locked loops, and so on. It paints a clear, physical picture of related technologies and reviews new developments in the field as well. It will be a useful reference to graduate students, researchers, and engineers in the field.

The authors work at the Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences. They have been engaged in the field of semiconductor lasers, optical communications and optical fiber sensors for many years. Their work focuses on applications of single frequency semiconductor laser, such as laser cooling, highly precise interferometers and coherent optical communications in recent years.