Introduction.- Basic Optics.- Elements of Quantum Mechanics.- The Einstein Coefficients and Light Amplification.- Laser Rate Equations.- Semiclassical Theory of the Laser.- Optical Resonators.- Vector Spaces and Linear Dirac Notation.- Quantum Theory of Interaction of Radiation Fields with Matter.- Properties of Lasers.- Some Laser Systems.- Doped Fiber Amplifiers and Lasers.- Semiconductor Lasers.- Optical Parametric Oscillators.- Spacial Frequency Filtering and Holography.- Laser Induced Fusion.- Lightwave Communications.- Lasers in Science.- Lasers in Industry.