UNIT-I : Quantum Mechanics Introduction to quantum physics, Black body radiation, Planck’s law, Photoelectric effect, Compton effect, de-Broglie’s hypothesis, Wave-particle duality, Davisson and Germer experiment, Heisenberg’s Uncertainty principle, Born’s interpretation of the wave function, Schrodinger’s time independent wave equation, Particle in one dimensional box. (Chapter - 1) UNIT-II : Semiconductor Physics Intrinsic and Extrinsic semiconductors, Dependence of Fermi level on carrier-concentration and temperature, Carrier generation and recombination, Carrier transport : diffusion and drift, Hall effect, p-n junction diode, Zener diode and their V-I Characteristics, Bipolar Junction Transistor (BJT) : Construction, Principle of operation. (Chapter - 2) UNIT-III : Optoelectronics Radiative and non-radiative recombination mechanisms in semiconductors, LED and semiconductor lasers : Device structure, Materials, Characteristics and figures of merit, Semiconductor photodetectors : Solar cell, PIN and Avalanche and their structure, Materials, working principle and Characteristics. (Chapter - 3) UNIT-IV : Lasers and Fibre Optics Lasers : Introduction to interaction of radiation with matter, Coherence, Principle and working of Laser, Population inversion, Pumping, Types of Lasers : Ruby laser, Carbon dioxide () laser, He-Ne laser, Applications of laser. Fibre Optics : Introduction, Optical fibre as a dielectric wave guide, Total internal reflection, Acceptance angle, Acceptance cone and Numerical aperture, Step and Graded index fibres, Losses associated with optical fibres, Applications of optical fibres. (Chapter - 4) UNIT-V : Electromagnetism and Magnetic Properties of Materials Laws of electrostatics, Electric current and the continuity equation, Ampere’s and Faraday’s laws, Maxwell’s equations, Polarisation, Permittivity and Dielectric constant, Internal fields in a solid, Clausius-Mossotti equation, Ferroelectrics and Piezoelectrics. Magnetisation, permeability and susceptibility, Classification of magnetic materials, Ferromagnetism and ferromagnetic domains, Hysteresis, Applications of magnetic materials. (Chapter - 5)