| Topics in Photonics | p. 1 |
| What Does Photonics Mean? | p. 1 |
| Photonics and Light Technology | p. 2 |
| Scientific Topics | p. 3 |
| Technical Topics | p. 5 |
| Applications | p. 6 |
| Costs of Photons | p. 8 |
| Properties and Description of Light | p. 11 |
| Properties of Photons | p. 11 |
| Energy, Frequency, Wavelength, Moments, Mass, Timing | p. 11 |
| Uncertainty Principle for Photons | p. 14 |
| Uncertainty of Position and Momentum | p. 14 |
| Uncertainty of Energy and Time | p. 15 |
| Properties of a Light Beam | p. 16 |
| Plane Waves Monochromatic Light | p. 18 |
| Space- and Time Dependent Wave Equation | p. 18 |
| Complex Representation | p. 21 |
| Intensity and Energy Density as a Function of the Electric Field | p. 22 |
| Uncertainty of Field Strengths | p. 22 |
| Geometrical Optics | p. 23 |
| Preconditions: Fresnel Number | p. 23 |
| Theoretical Description | p. 23 |
| Ray Characteristics | p. 25 |
| Ray Propagation with Ray Matrices | p. 26 |
| Gaussian Beams | p. 27 |
| Preconditions | p. 27 |
| Definition and Theoretical Description | p. 27 |
| Beam Characteristics and Parameter | p. 28 |
| Rayleigh Length zr | p. 29 |
| Beam Radius w(z) | p. 29 |
| Wave Front Radius R(z) | p. 30 |
| Divergence Angle ¿ | p. 31 |
| Complex Beam Parameter q(z) | p. 31 |
| Beam Propagation with Ray-Matrices | p. 32 |
| Determination of w0 and z0 | p. 33 |
| How to Use the Formalism | p. 33 |
| Ray Matrices | p. 34 |
| Deriving Ray Matrices | p. 34 |
| Ray Matrices of Some Optical Elements | p. 35 |
| Light Passing Through Many Optical Elements | p. 39 |
| Examples | p. 40 |
| Focusing with a Lens in Ray Optics | p. 40 |
| Focusing a Gaussian Beam with a Lens | p. 41 |
| Imaging with Two Lenses | p. 42 |
| Focal Length of Thin Spherical Lenses | p. 42 |
| Describing Light Polarization | p. 43 |
| Jones Vectors Characterizing Polarized Light | p. 43 |
| Jones Matrices of Some Optical Components | p. 46 |
| Stokes Vectors Characterizing Partially Polarized Light | p. 48 |
| Mueller Matrices of Some Optical Components | p. 50 |
| Using the Formalism | p. 51 |
| Light Characteristics | p. 51 |
| Power, Energy and Number of Photons | p. 52 |
| Average and Peak Power of a Light Pulse | p. 52 |
| Intensity and Beam Radius | p. 54 |
| Divergence | p. 57 |
| Beam Parameter Product Beam Quality | p. 59 |
| Brightness | p. 61 |
| Brilliance | p. 61 |
| Radiation Pressure and Optical Levitation | p. 61 |
| Statistical Properties of Photon Fields | p. 62 |
| Uncertainty of Photon Number and Phase | p. 63 |
| Description by Elementary Beams | p. 63 |
| Fluctuations of the Electric Field | p. 65 |
| Squeezed Light | p. 65 |
| Zero Point Energy and Vacuum Polarization | p. 66 |
| Interference and Coherence of Light | p. 67 |
| General Aspects | p. 67 |
| Coherence of Light | p. 68 |
| Coherence Length | p. 68 |
| Coherence Time | p. 69 |
| Lateral Coherence | p. 71 |
| Two-Beam Interference | p. 72 |
| Superposition of Two Vertical Polarized Light Beams | p. 74 |
| One-Dimensional Multibeam Interference | p. 76 |
| Fabry-Perot Interferometer | p. 77 |
| Light Beats: Heterodyne Technique | p. 82 |
| Frequency Spectrum of Light Pulses | p. 83 |
| Linear Interactions Between Light and Matter | p. 85 |
| General Description | p. 85 |
| Refraction and Dispersion | p. 89 |
| Absorption and Emission | p. 92 |
| Theoretical Description of Absorption and Emission | p. 92 |
| Properties of Stimulated Emission | p. 98 |
| Spontaneous Emission | p. 98 |
| Radiationless Transitions | p. 100 |
| Measurement of Absorption | p. 101 |
| Lambert-Beer Law | p. 101 |
| Cross-Section and Extinction Coefficient | p. 102 |
| Absorption Spectra of Some Optical Materials and Filters | p. 103 |
| Polarization in Refraction and Reflection (Fresnel's Formula) | p. 104 |
| Fresnel's Formula | p. 105 |
| General Formula | p. 105 |
| Transition into Optically Denser Medium | p. 107 |
| Transition into Optical Thinner Medium | p. 109 |
| Brewster's Law | p. 111 |
| Total Reflection | p. 111 |
| Relation Between Reflection, Absorption and Refraction | p. 113 |
| Birefringence | p. 114 |
| Optical Activity (Polarization Rotation) | p. 118 |
| Diffraction | p. 119 |
| General Description: Fresnel's Diffraction Integral | p. 120 |
| Far-Field Pattern: Fraunhofer Diffraction Integral | p. 121 |
| Diffraction in First-Order Systems: Collins Integral | p. 121 |
| Diffraction at a One-Dimensional Slit | p. 122 |
| Diffraction at a Two-Dimensional Slit | p. 124 |
| Diffraction at a Circular Aperture | p. 126 |
| Diffraction at Small Objects (Babinet's Theorem) | p. 128 |
| Spot Size of Foci and Resolution of Optical Images | p. 128 |
| Modulation Transfer Function (MTF) | p. 129 |
| Diffraction at a Double-Slit | p. 130 |
| Diffraction at One-Dimensional Slit Gratings | p. 131 |
| Diffraction at a Chain of Small Objects | p. 132 |
| Diffraction at Two-Dimensional Gratings | p. 133 |
| Diffraction at Three-Dimensional Gratings | p. 135 |
| Bragg Reflection | p. 135 |
| Amplitude and Phase Gratings | p. 136 |
| Diffraction at Optically Thin and Thick Gratings | p. 138 |
| Light Scattering Processes | p. 142 |
| Rayleigh and Rayleigh Wing Scattering | p. 142 |
| Mie Scattering | p. 144 |
| Brillouin Scattering | p. 145 |
| Raman Scattering | p. 147 |
| Optical Materials | p. 149 |
| Nonlinear Interactions of Light and Matter Without Absorption | p. 151 |
| General Classification | p. 152 |
| Nonresonant Interactions | p. 153 |
| Nonlinear Polarization of the Medium | p. 156 |
| Second-Order Effects | p. 158 |
| Generation of the Second Harmonic | p. 158 |
| Phase Matching | p. 160 |
| Phase Matching for Second Harmonic Generation | p. 161 |
| Dispersion of Crystals: Sellmeier Coefficients | p. 164 |
| Walk-Off Angle | p. 165 |
| Focusing and Crystal Length | p. 166 |
| Type I and Type II Phase Matching | p. 166 |
| Quasi-Phase Matching (qpm) | p. 167 |
| Frequency Mixing of Two Monochromatic Fields | p. 168 |
| Parametric Amplifiers and Oscillators | p. 169 |
| Pockels' Effect | p. 172 |
| Electro-Optical Beam Deflection | p. 176 |
| Optical Rectification | p. 177 |
| Third-Order Effects | p. 179 |
| Generation of the Third Harmonic | p. 180 |
| Kerr Effect | p. 181 |
| Self-Focusing | p. 184 |
| Spatial Solitons | p. 186 |
| Self-Diffraction | p. 188 |
| Self-Focusing in Weakly Absorbing Samples | p. 189 |
| Self-Phase Modulation | p. 189 |
| Generation of Temporal Solitons: Soliton Pulses | p. 192 |
| Stimulated Brillouin Scattering (SBS) | p. 194 |
| Stimulated Thermal Brillouin Scattering (STBS) | p. 204 |
| Stimulated Rayleigh (SRLS) and Thermal Rayleigh (STRS) Scattering | p. 206 |
| Stimulated Rayleigh Wing (SRWS) Scattering | p. 207 |
| Stimulated Raman Techniques | p. 210 |
| Stimulated Raman Scattering (SRS) | p. 210 |
| Inverse Raman Spectroscopy (IRS) | p. 215 |
| Stimulated Raman Gain Spectroscopy (SRGS) | p. 216 |
| Coherent Anti-Stokes Raman Scattering (CARS) | p. 216 |
| BOX CARS | p. 218 |
| Optical Phase Conjugation via Stimulated Scattering | p. 219 |
| Higher-Order Nonlinear Effects | p. 227 |
| Materials for Nonresonant Nonlinear Interactions | p. 228 |
| Inorganic Crystals | p. 228 |
| Organic Materials | p. 229 |
| Liquids | p. 229 |
| Liquid Crystals | p. 230 |
| Gases | p. 230 |
| Nonlinear Interactions of Light and Matter with Absorption | p. 231 |
| General Remarks | p. 231 |
| Homogeneous and Inhomogeneous Broadening | p. 232 |
| Incoherent Interaction | p. 235 |
| Bleaching | p. 236 |
| Transient Absorption: Excited State Absorption (ESA) | p. 238 |
| Nonlinear Transmission | p. 239 |
| Stimulated Emission: Superradiance: Laser Action | p. 241 |
| Spectral Hole Burning | p. 242 |
| Description with Rate Equations | p. 243 |
| Basic Equations | p. 243 |
| Stationary Solutions of Rate Equations | p. 246 |
| Stationary Two-Level Model | p. 247 |
| Stationary Four-Level Model | p. 249 |
| Stationary Model with Two Absorptions | p. 251 |
| General Stationary Models | p. 253 |
| Numerical Solution | p. 254 |
| Considering Spectral Hole Burning with Rate Equations | p. 257 |
| Coherent Light Fields | p. 259 |
| Induced Transmission and Excited State Absorption Gratings | p. 261 |
| Induced Inversion Gratings | p. 262 |
| Spatial Hole Burning | p. 263 |
| Induced Grating Spectroscopy | p. 264 |
| Coherent Resonant Interaction | p. 265 |
| Dephasing Time T2 | p. 265 |
| Density MatrixFormalism | p. 266 |
| Modeling Two-Level Scheme | p. 270 |
| Feynman Diagrams for Nonlinear Optics | p. 275 |
| Damped Rabi Oscillation and Optical Nutation | p. 278 |
| Quantum Beat Spectroscopy | p. 280 |
| Photon Echoes | p. 281 |
| Self-Induced Transparency: ¿ Pulses | p. 284 |
| Superradiance (Superfluorescence) | p. 285 |
| Amplification Without Inversion | p. 286 |
| Two-Photon and Multiphoton Absorption | p. 287 |
| Photoionization and Optical Breakdown (OBD) | p. 291 |
| Optical Damage | p. 293 |
| Laser Material Processing | p. 295 |
| Combined Interactions with Diffraction and Absorption Changes | p. 297 |
| Induced Amplitude and Phase Gratings | p. 297 |
| Four-Wave Mixing (FWM) | p. 300 |
| Optical Bistability | p. 306 |
| Materials in Resonant Nonlinear Optics | p. 309 |
| Organic Molecules | p. 309 |
| Structure and Optical Properties | p. 310 |
| Preparation of the Samples | p. 318 |
| Anorganic Crystals | p. 319 |
| Photorefractive Materials | p. 319 |
| Semiconductors | p. 321 |
| Nanometer Structures | p. 321 |
| Lasers | p. 325 |
| Principle | p. 325 |
| Active Materials: Three- and Four-Level Schemes - Gain | p. 327 |
| Pump Mechanism: Quantum Defect and Efficiency | p. 329 |
| Pumping by Other Lasers | p. 331 |
| Electrical Pumping in Diode Lasers | p. 337 |
| Electrical Discharge Pumping | p. 339 |
| Lamp Pumping | p. 341 |
| Chemical Pumping | p. 342 |
| Efficiencies | p. 343 |
| Side-Effects from the Pumped Active Material | p. 345 |
| Thermal Lensing | p. 345 |
| Thermally Induced Birefringence | p. 348 |
| Thermal Stress Fracture Limit | p. 351 |
| Laser Resonators | p. 352 |
| Stable Resonators: Resonator Modes | p. 352 |
| Unstable Resonators | p. 353 |
| Transversal Modes of Laser Resonators | p. 354 |
| Fundamental Mode | p. 354 |
| Empty Resonator | p. 355 |
| g Parameter and g Diagram | p. 357 |
| Selected Stable Empty Resonators | p. 358 |
| Higher Transversal Modes | p. 362 |
| Circular Eigenmodes or Gauss-Laguerre Modes | p. 363 |
| Rectangular or Gauss-Hermite Modes | p. 364 |
| Hybrid or Donut Modes | p. 370 |
| Beam Radii of Higher Transversal Modes and Power Content | p. 370 |
| Beam Divergence of Higher Transversal Modes | p. 373 |
| Beam Quality of Higher Transversal Modes | p. 374 |
| Propagating Higher Transversal Modes | p. 374 |
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