Page 58 - CatalogNEP-PS

 This kind of specialization is expected to provide a larger scope for research in the various
related and interdisciplinary areas.
 The basics of the laser and some spectroscopic techniques using laser taught in this course
will be an added asset.
 able to understand the basic physics behind laser and its parts and their requirement.

THEORY (45 Hours)

UNIT 1 (5 Hours)

Molecular symmetry and group theory: Symmetry operations and point groups for molecules, the
representation of a point group, matrices and basis sets, reducible and irreducible representations,
application to vibrational spectroscopy.
UNIT 2 (10 Hours)

Theory: Microwave, Infrared, Raman, far infrared and UV-VIS spectra of diatomic and
polyatomic molecules, Quantum theory of Raman effect, rotational, vibrational and rotation-
vibration Raman spectra of diatomic and polyatomic molecules, correlation of infrared and Raman
spectra, far infrared and UV-VIS spectra of gases, liquids and solids, determination of force
constants and force field from isotropic molecules and spectroscopic data, thermodynamic
functions from spectroscopic data, determination of partition function, electronic contribution to
thermodynamic properties, enthalpy and specific heats from spectroscopic data, spectroscopic
instrumentation.
UNIT 3 (5 Hours)

Laser fundamentals: spontaneous and stimulated emission, Einstein A & B coefficients. Optical
pumping; population inversion, three level and four level laser system, Rate equations, lasing
action, coherence, polarization, width and profile of spectral lines, lasers as spectroscopic sources,
spectral characteristics of laser emission, single and multi-mode lasers, laser tenability. and rate
equation. Optical resonators, Stability of resonators, Characteristics of Gaussian beam, He-Ne and
Ruby Lasers
UNIT 4 (10 Hours)
Spectroscopy: Fluorescence and Raman spectroscopy with lasers
Non-linear spectroscopy: Phase matching, second harmonic generation, sum and frequency
generating, optical parametric oscillator
Time resolved laser spectroscopy: Generation and measurement of ultra-short pulses and life time
measurements with lasers, pump and probe techniques.

UNIT 5 (5 Hours)
Optical cooling: Photon recoil, optical molasses, magneto-optical trap, limits of cooling

UNIT 6 (10 Hours)
Nuclear Magnetic Resonance Spectroscopy: General theory of high-resolution NMR
spectroscopy, experimental technique, analyses of NMR spectra, spin-spin coupling, chemical
shift
Electron Spin Resonance Spectroscopy: Experimental methods, derivative spectra, hyperfine
structure, anisotropic systems
X-ray Photo-electron Spectroscopy: Instrumentation, XPS spectra and its interpretations, chemical
shift, oxidation state analysis

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