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NOTES
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LASER SPPU
(17 pages)
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OPTICAL FIBRE SPPU
(15 pages)
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DIFFRACTION SPPU
(33 pages)
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(for interference notes, follow video)
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Wave Optics: Interference
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Introduction to electromagnetic waves and electromagnetic spectrum
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Interference in thin film of uniform thickness (with derivation)
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Path and Phase difference for Constructive and Destructive Interference in Hindi | Engineering
9:00
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What is Optical Path Difference | Engineering Physics
10:00
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Phase and Path Shift due to Reflection | Engineering Physics
2:00
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What is Thin Film and Interference in Thin Film | Engineering Physics
2:00
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Interference In Thin Film Of Uniform Thickness | Engineering Physics
20:00
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Visibility of Fringes in Reflected System & Transmitted System | Engineering Physics
7:00
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Why does an Extensive Thin Film Appear to be Perfect Black ? | Engineering Physics
3:00
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Colours in Thin Film in Sunlight | Engineering Physics
8:00
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Quick Revision Of Problems Based on wavelength | Uniform thickness thin film
9:00
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Important Questions On Thin Film
11:00
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Quick Revision Of Problems Based on thickness | Uniform thickness thin film
6:00
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Interference in thin film wedge shape (qualitative)
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Interference In Wedge Shaped Film in hindi | Engineering Physics | Detailed explanation
22:00
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Shape of Fringes | Wedge Shaped Thin Film
7:00
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Derivation of Fringe Width | Wedge shaped Thin Film
8:00
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Interference: Applications of interference: testing optical flatness, anti-reflection coating
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Wave Optics: Diffraction
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Diffraction of light
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Various Phenomenon Associated With Light
13:00
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Types of Diffraction: Fresnel Vs Fraunhofer
14:00
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Concept of path & Phase difference
8:00
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Diffraction at a single slit, conditions for principal maxima and minima, diffraction pattern
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Diffraction: Fraunhoffer diffraction at single slit
42:00
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Numerical Solving: Fraunhoffer Single Slit Diffraction
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Position of Maxima & Minima in Fraunhoffer Diffraction
17:00
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Dependency of Spectrum on Wavelength and Slit Width
9:00
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Width of Central Maxima
5:00
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Recording - Numerical on Single Slit Diffraction
55:00
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Diffraction grating, conditions for principal maxima and amplitude equations, diffraction pattern minima starting from resultant
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Diffraction Grating: Derivation of Intensity
23:00
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Position of Maxima & Minima: Diffraction Grating
33:00
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Determination of wavelength of light using plane transmission grating
11:00
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Rayleigh’s criterion for resolution, resolving power of telescope and grating
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Resolving power of a grating
16:00
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Wave Optics: Polarization
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Polarization of light, Malus law
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Double refraction, Huygen’s theory of double refraction
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Applications of polarization: LCD
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Laser and Optic Fibre: Laser
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Basics of laser and its mechanism, characteristics of laser
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Laser: spontaneous emission and stimulated emission
32:00
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Einsteins Equations
17:00
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Population inversion & Types of Pumping
18:00
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Levels of pumping
6:00
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Components of a Laser: Active medium. Resonantor Cavity, Pumping source
13:00
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Helium Neon laser
15:00
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Semiconductor laser: Single Hetro-junction laser
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Semiconductor Diode Laser
8:00
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Gas laser: CO2 laser
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Applications of lasers: Holography, IT, industrial, medical
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Laser and Optic Fibre: Optic Fibre
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Introduction, parameters: Acceptance Angle, Acceptance Cone, Numerical Aperture
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introduction to optical fiber
6:00
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Concept of total inernal reflection
6:00
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Angle of acceptance and Numerical Aperture
22:00
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Types of optical fiber- step index and graded index
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Attenuation and reasons for losses in optic fibers (qualitative)
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Communication system: basic building blocks
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Advantages of optical fiber communication over conventional methods.
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Quantum Mechanics
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De-Broglie hypothesis
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Concept of phase velocity and group velocity (qualitative)
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Heisenberg Uncertainty Principle
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Wave-function and its physical significance
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Schrodinger’s equations: time independent and time dependent
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Application of Schrodinger’s time independent wave equation - Particle enclosed in infinitely deep potential well (Particle in RigidBox)
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Particle in Finite potential well (Particle in Non Rigid box) (qualitative)
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Tunneling effect, Tunneling effect examples (principle only): Alpha Decay, Scanning Tunneling Microscope, Tunnel diode
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Introduction to quantum computing
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Semiconductor Physics
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Free electron theory (Qualitative)
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Opening of band gap due to internal electron diffraction due to lattice Band theory of solids
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Effective mass of electron Density of states
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Fermi Dirac distribution function
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Conductivity of conductors and semiconductors
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Position of Fermi level in intrinsic and extrinsic semiconductors (with derivations based on carrier concentration)
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Working of PN junction on the basis of band diagram
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Expression for barrier potential (derivation)
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Ideal diode equation
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Applications of PN junction diode: Solar cell (basic principle with band diagram) IV Characteristics and Parameters, ways of improving efficiency of solar cell
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Hall effect: Derivation for Hall voltage, Hall coefficient, applications of Hall effect
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Magnetism and Superconductivity: Magnetism
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Origin of magnetism
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Classification of magnetism on the basis of permeability (qualitative)
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Applications of magnetic devices: transformer cores, magnetic storage, magneto-optical recording
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Magnetism and Superconductivity: Superconductivity
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Introduction to superconductivity; Properties of superconductors: zero electrical
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resistance, critical magnetic field, persistent current, Meissner effect
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Type I and Type II superconductors
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Low and high temperature superconductors (introduction and qualitative)
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AC/DC Josephson effect; SQUID: basic construction and principle of working; Applications of SQUID
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Applications of superconductors
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Non Destructive Testing and Nanotechnology: Non Destructive Testing
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Classification of Non-destructive testing methods
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Principles of physics in Non-destructive Testing
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Advantages of Non-destructive testing methods
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Acoustic Emission Testing
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Ultrasonic (thickness measurement, flaw detection)
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Radiography testing
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Non Destructive Testing and Nanotechnology: Nanotechnology
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Introduction to nanotechnology
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Quantum confinement and surface to volume ratio
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Properties of nanoparticles: optical, electrical, mechanical
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Applications of nanoparticles: Medical (targeted drug delivery), electronics, space and defense, automobile
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Launch your Graphy