CH-343 / 3 credits

Teacher: Drabbels Marcel

Language: English


Introduction into optical spectroscopy of molecules


  • Overview of Molecular Spectroscopy
  • Molecular Symmetry and Molecular Spectroscopy
  • Rotational Spectroscopy
  • Vibrational Spectroscopy
  • Electronic Spectroscopy


Learning Prerequisites

Recommended courses

Quantum Chemistry

Learning Outcomes

By the end of the course, the student must be able to:

  • Discuss the Born Oppenheimer approximation and its consequences
  • Derive line intensities of transitions
  • Derive rotational energy levels of different types of molecules
  • Analyze rotational spectra
  • Derive vibrational energy levels of molecules
  • Analyze rovibrational spectra
  • Describe Raman spectroscopy
  • Analyze Raman spectra
  • Formulate the Franck Condon principle
  • Analyze rovibronic spectra of diatomic molecules
  • Work out / Determine selection rules using group theory

Teaching methods

Ex Cathedra with excersise sessions

Expected student activities

Work on the excercises at home

Assessment methods

Oral exam



Primary References:                          

  • J. M. Hollas, Molecular Spectroscopy
  • C. H. Townes and A. L. Schawlow, Microwave Spectroscopy
  • D. A. McQuarrie, Quantum Chemistry


Secondary References:

  • G. Herzberg, Molecular Spectra and Molecular Structure. I. Spectra of Diatomic Molecules
  • G. Herzberg, Molecular Spectra and Molecular Structure. II. Infrared and Raman Spectra of Polyatomic Molecules
  • G. Herzberg, Molecular Spectra and Molecular Structure. III. Electronic Spectra and Electronic Structure of Polyatomic Molecules

Ressources en bibliothèque

Moodle Link

In the programs

  • Semester: Spring
  • Exam form: Oral (summer session)
  • Subject examined: Spectroscopy
  • Lecture: 2 Hour(s) per week x 14 weeks
  • Exercises: 1 Hour(s) per week x 14 weeks
  • Type: mandatory

Reference week

Related courses

Results from