1. Highlights in the Development of Laser 2. Optical Resonators 3. Line Shapes and Threshold Condition of Oscillation 4. Gas Lasers 5. Solid State Laser 6. Semi- Conductor Lasers 7. Dye Laser 8. Non Linear Optics 9. Far Ultraviolet and X-Ray Laser 10. Theory of Laser 11. Application of Lasers