Introduction.- Atmospheric Channel Effects on Free-Space Laser Communication.- Free-Space Laser Communication Performance.- Optical Communication Transmitter and Receiver Design.- Free-Space Laser Communications with Adaptive Optics: Atmospheric Compensation Experiments.- Optical Networks, Last Mile Access and Applications- Communication Techniques and Coding for Atmospheric Turbulence Channels.- Optical Communications in the Mid-wave IR Spectral Band.- Quantum Cascade Laser Based Free Space Optical Communications.- All Weather Long-Wavelength Infrared Free Space Optical Communications.