Contents- Quantum Theory of Coherence-Coherent States, Nonclassical Light, Photon Statistics, and Quantum Noise- Interference - Single Photon and Two Photon Interferometry, Frequency Domain, and Phase Conjugate Interferometers- Berry's Phase in Optics and Radiation Matter Interaction- Quantum Jumps- Correlated Spontaneous Emission, Cavity QED-Enhanced and Inhibited Spontaneous Emission, Frequency Shifts, Line Narrowing, and Micromaser- Quantum Optical Tests of the Foundations of Quantum Mechanics - Quantum Measurements, Bell's Inequalities, Complmentarity, and Zeno Effect