Module I

Interference, Diffraction and Polarization

(22 hours)

Light waves- phase difference and coherence, optical path and phase change, principle

of superposition, Analytical treatment of interference-young’s double slit experiment,

conditions for interference, bandwidth - Interference in thin films-reflected system-colour

of thin films-fringes of equal inclination and equal thickness. Newton’s rings-reflected

system-measurement of wavelength

Curriculum and syllabus 2017 admissions onwardsB Sc Programme in Physics, Mahatma Gandhi University

84

Fresnel and Fraunhofer diffractions. Fresnel’s theory of approximate rectilinear

propagation of light-. Fraunhofer diffraction. Theory of Plane transmission grating-

determination of wavelength-dispersive power of grating. Prism and grating spectra,

resolving power, Rayleigh criterion, resolving power of grating,

Polarization, types of polarization, Brewster’s law, dichroism, birefringence – e ray and o-

ray, polarizer and analyser, Malu’s law, optical activity

Module II

Laser and Fiber Optics

(10 hours)

Principle of operation of laser-population inversion, metastable states, optical resonator-

components of laser- active medium, pump, optical resonant cavity- principal pumping

schemes- three level and four level- laser beam characteristics applications of lasers.

Light propagation in optical fibers, acceptance angle, numerical aperture-step index fiber

- graded index fiber.

Module III

Dielectrics

(10 hours)

Dielectrics- polar and non-polar dielectrics- polarization- sources of polarization-Gauss’s

law in dielectrics- permittivity- dielectric displacement vector- dielectric constant-

susceptibility- ferro-electricity.

Module IV

Varying Currents

(12 hours)

Transient currents – Growth and decay of current in an inductive circuit – charging and

discharging of a capacitor through a resistance - Peak, mean, rms and effective values of

a.c, Ac circuits-AC through RC, LC, LR and LCR series circuits resonance-sharpness of

resonance-power factor.

References:

1. Optics - Brijlal and N. Subrahmanyam, S Chand-2015

2. Electricity and Magnetism , D C Tayal

3. Electricity and Magnetism- J. H. Fewkes & John Yarwood

4. Electricity and Magnetism – R. Murugesha

- Teacher: JITHU SUSAN JACOB FACULTY