This book examines the variety of potential laser diagnostic techniques and presents a considerable theoretical foundation elucidating physics relevant to the laser diagnostics. It explains the Raman-based approaches for major species and temperature measurements.1. Survey of Laser Diagnostics 2. Background Physics 3. Experimental Considerations 4. Application Considerations 5. Spontaneous Raman and Rayleigh Scattering 6. Coherent Anti-Stokes Raman Spectroscopy (CARS) 7. Laser-Induced Fluorescence (LIF) 8. Coherent Methods for Minor Species 9. Field Techniques