Ultrafast laser spectroscopy

By Prof. Anindya Datta | IIT Bombay

Learners enrolled: 326

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 Engineering

PREREQUISITES : A basic course in Molecular Spectroscopy

INDUSTRY SUPPORT : Not known

Summary

Course Status :	Completed
Course Type :	Elective
Language for course content :	English
Duration :	12 weeks
Category :	Chemistry
Credit Points :	3
Level :	Postgraduate
Start Date :	18 Jan 2021
End Date :	09 Apr 2021
Enrollment Ends :	01 Feb 2021
Exam Date :	24 Apr 2021 IST

Note: This exam date is subject to change based on seat availability. You can check final exam date on your hall ticket.

Page Visits

Course layout

Week 1 : Introduction,Steady state spectroscopy,Spectrophotometers, Lab visit: Spectrophotometers

Week 2 : TCSPC theory, Lab visit: TCSPC, TCSPC data analysis

Week 3 : Streak Camera, Femtosecond Optical Gating,Lab visit: Femtosecond Optical gating

Week 4 : Pump probe technique: Theory, Lab visit: Pump probe ,Impulsive Raman spectroscopy

Week 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 dynamics

Week 11 : Ultrafast processes in materials science (3 hours)

Week 12 : Ultrafast processes in life sciences

Books and references

1. Lakowicz, J. R. Principles of fluorescence Spectroscopy 3rd ed, 2006, Plenum, New York.

2. Zewail, A. H. Femtochemistry : ultrafast dynamics of the chemical bond, 1994 World Scientific.

3. Douhal, A. ed. Femtochemistry and Femtobiology : ultrafast dynamics in molecular science . 2002 World Scientific.

4. Silfvast, W. T. Laser Fundamentals, 2003 Cambridge.

6. Journal publications.

5. Abramczyk, H. Introduction to Laser Spectroscopy, Elsevier 2005.

Instructor bio

Prof. Anindya Datta

IIT Bombay

I am a Professor of Chemistry in IIT Bombay, with research interest in ultrafast spectroscopy and time resolved fluorescence microscopy. I have teaching experience of 17 years. 14 Ph. D. students have graduated from our laboratory. Eight more are working towards their degree. I received Excellence in Teaching Award from our institute in 2017 and have taught two NPTEL courses: one on Molecular Spectroscopy and another on Symmetry in Chemistry.

Course certificate

The course is free to enroll and learn from. But if you want a certificate, you have to register and write the proctored exam conducted by us in person at any of the designated exam centres.
The exam is optional for a fee of Rs 1000/- (Rupees one thousand only).
Date and Time of Exams: 24 April 2021 Morning session 9am to 12 noon; Afternoon Session 2pm to 5pm.
Registration url: Announcements will be made when the registration form is open for registrations.
The online registration form has to be filled and the certification exam fee needs to be paid. More details will be made available when the exam registration form is published. If there are any changes, it will be mentioned then.
Please check the form for more details on the cities where the exams will be held, the conditions you agree to when you fill the form etc.

CRITERIA TO GET A CERTIFICATE

Average assignment score = 25% of average of best 8 assignments out of the total 12 assignments given in the course.
Exam score = 75% of the proctored certification exam score out of 100

Final score = Average assignment score + Exam score

YOU WILL BE ELIGIBLE FOR A CERTIFICATE ONLY IF AVERAGE ASSIGNMENT SCORE >=10/25 AND EXAM SCORE >= 30/75. If one of the 2 criteria is not met, you will not get the certificate even if the Final score >= 40/100.

Certificate will have your name, photograph and the score in the final exam with the breakup.It will have the logos of NPTEL and IIT Bombay.It will be e-verifiable at nptel.ac.in/noc.

Only the e-certificate will be made available. Hard copies will not be dispatched.

Once again, thanks for your interest in our online courses and certification. Happy learning.

- NPTEL team

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