Lecture 1 - Lasers at a Glance Lecture 2 - Light Amplifier and the Concept of Cavity Lecture 3 - Laser: An Integration of a Population Inverted Medium and a Cavity Lecture 4 - The Invention of Lasers by Maiman Lecture 5 - Population Inversion vis-à-vis Boltzmann Distribution Lecture 6 - Different Methods of Pumping to Effect Population Inversion Lecture 7 - Population Inversion vis-à-vis No. of Participating Energy Levels in the process of Lasing Lecture 8 - Behaviour of Light Lecture 9 - Behaviour of Light (Continued...) Lecture 10 - Youngs Doble Slit Experiment and Interference of Light Lecture 11 - Interference of Light and Fabrication of Laser Windows and Mirrors Lecture 12 - Fabrication of Laser Windows and Mirrors (Continued...) Lecture 13 - Diffraction of Light Lecture 14 - Scattering of Light Lecture 15 - Light Scattering (Continued...) and Polarisation of Light Lecture 16 - Polarisation of Light (Continued...) and Brewster Angle of Incidence Lecture 17 - Continuous and Pulsed Operation of Lasers Lecture 18 - The Maximum Achievable Power from a Pulsed Laser Lecture 19 - Continuous and Pulsed Pumping of Lasers Lecture 20 - Continuous and Pulsed Pumping of Lasers (Continued...) Lecture 21 - Optical Pumping : Coupling of Pump Laser Beam into the Cavity Lecture 22 - Electrical Pumping Lecture 23 - Different Kinds of Lasers Lecture 24 - Atomic Gas Lasers: He-Ne Laser Lecture 25 - He-Ne Laser (Continued...) Lecture 26 - Emission Features of He-Ne Laser Lecture 27 - Ion Lasers: Argon Ion Laser Lecture 28 - Argon Ion Lasers: Emission Feature Lecture 29 - Liquid Lasers: Dye Laser Lecture 30 - Dye Lasers: Working Principle and Emission Features Lecture 31 - Solid State Lasers: Nd-YAG Laser Lecture 32 - Pumping of Nd-YAG Lasers Lecture 33 - Diode Pumped Solid State Lasers and Continuously Tunable Solid State Lasers Lecture 34 - Excimer Lasers: Importance Lecture 35 - Excimer Lasers: Working Principle, Rare Gas Halide Lasers Lecture 36 - Introduction to CO2 lasers and molecular spectroscopy Lecture 37 - Molecular Spectroscopy: Ro-vibrational Transitions Lecture 38 - Modes of molecular vibration, Vibrational modes and 4 level lasing scheme in a CO2 laser Lecture 39 - Mechanism of lasing in a CO2 laser Lecture 40 - Low pressure, CW Operation of a CO2 laser Lecture 41 - Limitations of CW-CO2 Lasers and remedy Lecture 42 - Pulsed Operation of CO2 Lasers; TEA CO2 Lasers and their Temporal Emission Profile Lecture 43 - TEA CO2 Lasers: Operation, Gain Broadening and Emission Features Lecture 44 - Gain Broadening and Emission Features (Continued...) Lecture 45 - Discrete and Continuously Tunable Operation of a CO2 laser Lecture 46 - Chemical Lasers: Underlying Physics Lecture 47 - Principle of Operation of HF, DF Chemical Oxygen Iodine Lasers Lecture 48 - Gas Dynamic Lasers: Principle of Operation Lecture 49 - Operation of Gas Dynamic CO2 Lasers Lecture 50 - Fiber Lasers: Its Advantages over Conventional Solid State Lasers Lecture 51 - Fiber Laser (Continued...) Lecture 52 - The Acceptance Angle, Pumping of Fiber Lasers and their Operation Lecture 53 - Scaling up of Output Power of Fiber Laser and Operation of Fiber Amplifiers Lecture 54 - Semiconductor Lasers: An Introduction and Basics of Semiconductor Physics Lecture 55 - Metals, Insulators and Semiconductors, Concept of Holes Lecture 56 - Concept of Holes (Continued...), Intrinsic and Extrinsic Semiconductors Lecture 57 - n-type and p-type semiconductors, Semiconductor Diodes, Light Emitting Diodes (LED) Lecture 58 - Diode Laser from the LED Lecture 59 - Homojunction and Hetrojunction Diode Lasers Lecture 60 - Edge Emitting Diode Lasers, Surface Emitting Diode Lasers, Diode Bars and Arrays

Lecture 1 - Lasers at a Glance Lecture 2 - Light Amplifier and the Concept of Cavity Lecture 3 - Laser: An Integration of a Population Inverted Medium and a Cavity Lecture 4 - The Invention of Lasers by Maiman Lecture 5 - Population Inversion vis-à-vis Boltzmann Distribution Lecture 6 - Different Methods of Pumping to Effect Population Inversion Lecture 7 - Population Inversion vis-à-vis No. of Participating Energy Levels in the process of Lasing Lecture 8 - Behaviour of Light Lecture 9 - Behaviour of Light (Continued...) Lecture 10 - Youngs Doble Slit Experiment and Interference of Light Lecture 11 - Interference of Light and Fabrication of Laser Windows and Mirrors Lecture 12 - Fabrication of Laser Windows and Mirrors (Continued...) Lecture 13 - Diffraction of Light Lecture 14 - Scattering of Light Lecture 15 - Light Scattering (Continued...) and Polarisation of Light Lecture 16 - Polarisation of Light (Continued...) and Brewster Angle of Incidence Lecture 17 - Continuous and Pulsed Operation of Lasers Lecture 18 - The Maximum Achievable Power from a Pulsed Laser Lecture 19 - Continuous and Pulsed Pumping of Lasers Lecture 20 - Continuous and Pulsed Pumping of Lasers (Continued...) Lecture 21 - Optical Pumping : Coupling of Pump Laser Beam into the Cavity Lecture 22 - Electrical Pumping Lecture 23 - Different Kinds of Lasers Lecture 24 - Atomic Gas Lasers: He-Ne Laser Lecture 25 - He-Ne Laser (Continued...) Lecture 26 - Emission Features of He-Ne Laser Lecture 27 - Ion Lasers: Argon Ion Laser Lecture 28 - Argon Ion Lasers: Emission Feature Lecture 29 - Liquid Lasers: Dye Laser Lecture 30 - Dye Lasers: Working Principle and Emission Features Lecture 31 - Solid State Lasers: Nd-YAG Laser Lecture 32 - Pumping of Nd-YAG Lasers Lecture 33 - Diode Pumped Solid State Lasers and Continuously Tunable Solid State Lasers Lecture 34 - Excimer Lasers: Importance Lecture 35 - Excimer Lasers: Working Principle, Rare Gas Halide Lasers Lecture 36 - Introduction to CO2 lasers and molecular spectroscopy Lecture 37 - Molecular Spectroscopy: Ro-vibrational Transitions Lecture 38 - Modes of molecular vibration, Vibrational modes and 4 level lasing scheme in a CO2 laser Lecture 39 - Mechanism of lasing in a CO2 laser Lecture 40 - Low pressure, CW Operation of a CO2 laser Lecture 41 - Limitations of CW-CO2 Lasers and remedy Lecture 42 - Pulsed Operation of CO2 Lasers; TEA CO2 Lasers and their Temporal Emission Profile Lecture 43 - TEA CO2 Lasers: Operation, Gain Broadening and Emission Features Lecture 44 - Gain Broadening and Emission Features (Continued...) Lecture 45 - Discrete and Continuously Tunable Operation of a CO2 laser Lecture 46 - Chemical Lasers: Underlying Physics Lecture 47 - Principle of Operation of HF, DF Chemical Oxygen Iodine Lasers Lecture 48 - Gas Dynamic Lasers: Principle of Operation Lecture 49 - Operation of Gas Dynamic CO2 Lasers Lecture 50 - Fiber Lasers: Its Advantages over Conventional Solid State Lasers Lecture 51 - Fiber Laser (Continued...) Lecture 52 - The Acceptance Angle, Pumping of Fiber Lasers and their Operation Lecture 53 - Scaling up of Output Power of Fiber Laser and Operation of Fiber Amplifiers Lecture 54 - Semiconductor Lasers: An Introduction and Basics of Semiconductor Physics Lecture 55 - Metals, Insulators and Semiconductors, Concept of Holes Lecture 56 - Concept of Holes (Continued...), Intrinsic and Extrinsic Semiconductors Lecture 57 - n-type and p-type semiconductors, Semiconductor Diodes, Light Emitting Diodes (LED) Lecture 58 - Diode Laser from the LED Lecture 59 - Homojunction and Hetrojunction Diode Lasers Lecture 60 - Edge Emitting Diode Lasers, Surface Emitting Diode Lasers, Diode Bars and Arrays