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Indian Institute of Technology Bombay

Ultrafast laser spectroscopy

Indian Institute of Technology Bombay and NPTEL via Swayam

Overview

The course introduces students to laser spectroscopy, with an emphasis on ultrafast spectroscopy. It deals with findamentals of instrumentation, data analysis and contemporary research in the field. The syllabus is as follows:Basics. Electronic absorption, fluorescence and phosphorescence. Fluorescence quantum yields and lifetimes. Solvent effects. FRET, fluorescence anisotropy. Tools. Fundamentals of instrumentation. Photon counting vs. analog detection. Time correlated single photon counting, Fluorescence upconversion, Transient absorption, Stimulated Raman spectroscopy. Temperature and pH jump experiments. Fluorescence Lifetime Imaging Microscopy. Applications. Ultrafast dynamics of the chemical bond, Solvation dynamics, Ultrafast dynamics of aqueous systems, Photoisomerization, Light harvesting antennae, Protein folding, Time resolved spectroscopic techniques in DNA sequencing, Ultrafast dynamics in nanomaterials and other novel fluorophores, Photoinduced electron transfer dynamics in Dye Sensitized Solar Cells. Time and space resolved spectroscopy of perovskites. INTENDED AUDIENCE : Chemistry, Physics, Materials Science, Biological Sciences, Chemical EngineeringPREREQUISITES : A basic course in Molecular SpectroscopyINDUSTRY SUPPORT : Not known

Syllabus

COURSE LAYOUT

Week 1 : Introduction,Steady state spectroscopy,Spectrophotometers, Lab visit: SpectrophotometersWeek 2 : TCSPC theory, Lab visit: TCSPC, TCSPC data analysisWeek 3 : Streak Camera, Femtosecond Optical Gating,Lab visit: Femtosecond Optical gatingWeek 4 : Pump probe technique: Theory, Lab visit: Pump probe ,Impulsive Raman spectroscopyWeek 5 : How are ultrashort pulses produced and amplified? (2 hours), Optical parametric Amplification (1 hour)Week 6 : Nonlinear optics (3 hours)Week 7 : Fluorescence depolarization and its time evolution: basics and application (3 hours)Week 8 : Forster Resonance Energy Transfer (3 hours)Week 9 : Application of ultrafast laser spectroscopy in basic science: How much time does it take for a bond to break? What is the mechanism of acid base reaction? (3 hours)Week 10: Solvation dynamics, Hydrogen bond dynamicsWeek 11: Ultrafast processes in materials science (3 hours)Week 12: Ultrafast processes in life sciences

Taught by

Prof. Anindya Datta

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