UNIT 1 | ONE SHOT LASERS | SPPU PUNE UNIVERSITY | 2024 PATTERN | ENGINEERING PHYSICS

For more such content and unit wise lectures as per SPPU Pune university, you can download our application named SIMPLIFYING ENGINEERING from google play store. Link is given below:- Application link:- https://play.google.com/store/apps/de... Website link:- https://www.simplifyingengineering.com/ Telegram Channel Link:- https://t.me/+UzKUeLdwblUwNjBl Whatsapp link:- https://t.me/+UzKUeLdwblUwNjBl UNIT 1:- LASERS & OPTIC FIBERS Laser: Spontaneous and stimulated emission, population inversion, pumping, active medium & active center, resonant cavity; Characteristics of lasers, CO2 laser: construction and working, Engineering applications of laser (IT, medical, industry), Holography (recording, reconstruction, applications); Optical Optical fibers: Critical angle, acceptance angle, acceptance cone, numerical aperture, total internal reflection and propagation of laser; Classification of optical fibers: Single mode & multimode, step index & graded index, Attenuation: attenuation coefficient, causes of attenuation; Advantages of optical fiber communication, numerical problems on parameters of optical fiber. UNIT 2:- Quantum Physics de Broglie hypothesis of matter waves, de Broglie wavelength for a particle accelerated by KE “E” and a charged particle accelerated by PD “V”, properties of matter waves; Wave function and probability density, mathematical conditions for wave function, problems on de Broglie wavelength; Need and significance of Schrödinger’s equations, Schrödinger’s time independent and time dependent equations; Energy of a particle enclosed in a rigid box and related numerical problems; Quantum mechanical tunneling, alpha particle decay, principle and applications of STM; Principles of quantum computing: concept of qbit, superposition and entanglement, comparison of classical & quantum computing, potential applications of quantum computing UNIT 3:- Wave optics Interference in thin film of uniform thickness, conditions of maxima and minima for reflected system; Conditions for maxima and minima for wedge shaped film (qualitative), engineering applications – ARC, determination of optical flatness; Numerical problems on thin film and wedge shaped film; Types of polarization: Unpolarized, Polarized, PPL, CPL and EPL, Malu’s law and related numerical problems; Double refraction: geometry of calcite crystal, Huygens’ theory; Engineering applications of polarization: LCD, communication & radar, 3D movies (recording, projection). UNIT 4:- Semiconductor Physics: Valence band, conduction band, band gap energy, classification of solids on the basis of band theory; Fermi level and Fermi energy for metal, FD distribution function and its temperature dependence, position of Fermi level in intrinsic semiconductors (derivation); Fermi level for extrinsic semiconductors, working of PN junction diode on the basis of Fermi energy; Solar cell: principle, working, IV-characteristics, efficiency and fill factor, measures to improve efficiency of solar cell, advantages and applications in environmental sustainability; Hall effect: derivation for Hall voltage and Hall coefficient and related numerical problems. Ultrasonics: Characteristics and properties of ultrasonic waves, Generation of ultrasonic waves by inverse piezoelectric effect (using transistor); Engineering applications - thickness measurement, flaw detection and related numerical problems. UNIT 5:- Nanoparticles: Quantum confinement and its effect on properties of nanoparticles, synthesis methods - ball milling and Physical Vapor Deposition; Properties of nanoparticles (optical, electrical, mechanical, magnetic); Applications of nanotechnology: Electronics (GMR effect and its application in read-write head of HDD), automobiles, environmental & energy, medical field (targeted drug delivery). Superconductivity: Temperature dependence of resistivity, critical magnetic field, critical current, Meissner effect and perfect diamagnetism; Type I and Type II Superconductors, Numerical problems on critical magnetic field; Formation of Cooper pairs, DC and AC Josephson effect, SQUID: working principle and applications; Engineering applications: electronics, principle of Maglev train.