This book provides a comprehensive introduction to spectroscopy, covering its origins and development, as well as the fundamentals of atomic and molecular spectroscopy. It then examines 11 representative spectroscopic techniques, including laser-induced breakdown spectroscopy (LIBS), Raman spectroscopy, and infrared spectroscopy, with detailed coverage of their principles, experimental systems, and advanced applications. The book further explores the integration of multiple spectroscopic techniques in materials science, environmental science, and industrial production, highlighting the advantages of multimodal approaches over individual techniques. It also examines the integration of machine learning and artificial intelligence with spectroscopy and presents a series of spectroscopic simulation projects based on recent research. The book concludes with an outlook on emerging trends and future technological developments in spectroscopy.

The book is a valuable reference for undergraduate and graduate students and university faculty in physics, optics, atmospheric sciences, and related fields. It is also suitable for researchers in optics, remote sensing, atmospheric physics, and astronomy, as well as engineers and technicians working in optoelectronics and related technologies.