OPTICAL SPECTROSCOPY TECHNIQUES
Academic year and teacher
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- Versione italiana
- Academic year
- 2017/2018
- Teacher
- ROBERTO ARGAZZI
- Credits
- 6
- Didactic period
- Secondo Periodo Didattico
- SSD
- CHIM/03
Training objectives
- The course aims to provide students with the fundamental knowledge, both theoretical and applied, concerning the various techniques of optical spectroscopy and on the related instrumentation. Specifically, base concepts on absorption and emission of radiation by molecules are resumed and deepened and the apparatus used to perform various spectroscopic investigations are described in detail. At the end of the course, the student shuold be able to choose the right spectroscopic technique best suited to study specific molecular properties.
Prerequisites
- It is not required to have any prerequisites, however, it is useful to have a good knowledge of the basic principles and generalm methods of inorganic chemistry and physical chemistry II .
Course programme
- Black body radiation. Planck's irradiation formula. Cavity modes. Absorption and emission of radiation. Einstein coefficients. Transition probability and oscillator strength (6 hrs). Photometric and radiometric quantities. Natural linewidth and lineshape of spectral lines. Homogeneous and inhomogeneous broadening (3 hrs). Incoherent and coherent sources: lasers (6 hrs). Monochromators: optical configurations and standard parameters (5 hrs). Photoelectronic and photovoltaic detectors (5 hrs). Transient absorption and emission laser spectrometers. Excited state absorption spectra. Ultrafast pump-probe spectroscopy (5 hrs). Experimental: Lifetime and excited state spectrum of an inorganic chromophore with nanosecond laser spectrometer (2 hrs); Absorption, emission, excitation and luminescence quantum yield of an organic luminophore (2 hrs); time correlated single photon counting technique (2 hrs).
Didactic methods
- The course consists of 30 hours of lectures on the topics of the program course and 6 hours of laboratory experiments aimed to become familiar with the instrumentation for spectroscopic analysis.
Learning assessment procedures
- The exam consists of an oral test on the topics of the course and on the laboratory experiments and it has the aim to verify the understanding of the course subjects and the ability to use the conceptual tools, provided during the course, for the discussion of possible cases.The examination consists of 3 questions and is passed when the candidate answers satisfactorily to at least two questions.
Reference texts
- 1) W. Demtroeder, Laser Spectroscopy 1 & 2, 5th edition, Springer.
2) M. Hollas, Modern Spectroscopy, 4th edition, Wiley.
