This book aims to present the latest developments in the field of laser pulses. It explains the characteristics of laser pulse creation, classification and applications. It even illustrates some accomplishments made in designs, experiments and theories. The book deals with its physical principles and illustrates examples regarding laser operations carried out under several extreme circumstances. The topic of mode-locking, based on optical noise perception, is analyzed within the book. Furthermore, it also discusses the paradoxes of ultra-short laser pulse arrangement. This book will help students and engineers to understand laser technology better.