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About the Course
Course Code - BPHY101L
Credits - 3
Modules - 8
NOTE:
Faculty notes are enough for this subject. Here, some notes and videos are uploaded for better understanding!
MODULE 1: Introduction to waves
Waves on a string - Wave equation on a string (derivation) - Harmonic waves- reflection and transmission of waves at a boundary - Standing waves and their eigenfrequencies - waves with dispersion - Superposition of waves and Fourier method (qualitative)
Refer these videos from 1 to 11
Wave packet - phase velocity and group velocity.
Refer these videos from 12 to 15
MODULE 2: Electromagnetic waves
Physics of divergence - gradient and curl - surface and volume integral - Maxwell Equations (Qualitative) - Continuity equation for current densities - Displacement current - Electromagnetic wave equation in free space - Plane electromagnetic waves in free space - Hertz's experiment.
Videos :
Maxwell Equations, Continuity Equations, Displacement Current, EM Wave equations in free space : 1 to 10
Gradient and curl: here
MODULE 3:Elements of quantum mechanics
Need for Quantum Mechanics: Idea of Quantization (Planck and Einstein) - Compton effect (Qualitative) -- de Broglie hypothesis - justification of Bohr postulate - Davisson-Germer experiment - Wave function and probability interpretation - Heisenberg uncertainty principle - Gedanken experiment (Heisenberg's microscope) - Schrödinger wave equation (time dependent and time independent).
Videos can be found from 2 to 27
MODULE 4: Applications of quantum mechanics
Eigenvalues and eigenfunction of particle confined in one dimensional box - Basics of nanophysics - Quantum confinement and nanostructures - Tunnel effect (qualitative) and scanning tunneling microscope.
Particle in 1D box: 1
Tunneling and STM: here
MODULE 5:Lasers
Laser characteristics - spatial and temporal coherence - Einstein coefficients and their significance - Population inversion - two, three and four level systems - Pumping schemes - threshold gain coefficient - Components of a laser - He-Ne, Nd:YAG and CO2 lasers and their engineering applications.
MODULE 6:Propagation of EM waves in optical fibers
Introduction to optical fiber communication system - light propagation through fibers - Acceptance angle - Numerical aperture - V-parameter - Types of fibers -- Attenuation - Dispersion-intermodal and intramodal. Application of fiber in medicine - Endoscopy.
MODULE 7:Optoelectronic devices
Introduction to semiconductors - direct and indirect bandgap -- p-n junction, Sources: LED and laser diode, Photodetectors: PN and PIN
Videos:
Semiconductors and bandgaps: here
Pn junction: here
LED and LD: here
Photodetectors: here