UFR de Physique

Présentation des enseignements

AE4 - Spectroscopic and Optical Methods

  • Description
  • Programme
  • Responsable
  • Documents

Modules

    UE non présente en Module M1
    UE présente en Module M2

Volume horaire

  • Cours : 30
  • Cours/TD : 0
  • TD : 0
  • TD/TP : 0
  • Stage : 0
  • Projet : 0
  • ATE : 0
  • TP : 10

Contenu du module

1 Rotational Spectroscopy

  • 1.1 Fourier Transform Microwave Spectroscopy
  • 1.2 Supersonic beam technique
  • 1.3 Millimeter wave spectroscopy: sources and detection methods
  • 1.4 Application : spectra recording and analysis

2 Gas phase THz spectroscopy of atmospheric compounds

  • 2.1 Electronic and optoelectronic THz sources for high resolution rotational gas phase THz spectroscopy
  • 2.2 Line frequency and line profile analysis for molecules of environmental interest
  • 2.3 Detection and quantification of atmospheric compounds in realistic environments
  • 2.4 Low resolution rovibrational gas phase THz spectroscopy using broadband sources (THz-Time domain Spectroscopy, FT-FIR spectroscopy): application to the study of aerosols

3 Vibrational spectroscopy - Raman and infrared

  • 3.1 Molecular vibrations, vibrational energy levels, vibrational transitions, Raman effect, selection rules, Raman and infrared complementarities
  • 3.2 Instrumentation: Raman and infrared spectrometers, optical devices, macro and micro-analysis, confocal microscopy, Raman and infrared mapping, spatial and temporal resolutions, limits of the techniques
  • 3.3 Applications: sampling, gas phase analysis, aerosols analysis, in situ measurements
  • 3.4 Practical work: identification of molecular composition of a single aerosol particle by micro-Raman spectroscopy, Raman mapping

4 Advanced absorption spectroscopy techniques

  • 4.1 Basics: Beer-Lambert law, instrumental consideration & characterization, modern photonic technology (light sources-detection of light), spectral manipulation (frequency metrology, concentration inversion & calibration)
  • 4.2 Modern techniques: - Cavity (CEAS) and multipass cell-based long optical path length spectroscopy

- Modulation spectroscopy : wavelength, concentration and velocity modulation - Background-free spectroscopic approaches: CRDS, PAS, FRS - Advanced sensitive measurement schemes: sweep integration, dual-beam balanced detection, fringe noise removal, adaptive digital filtering

  • 4.3 Applications of photonic absorption spectroscopy:

- UV-VIS LED-IBBCEAS (light-emitting diode based incoherent broadband cavity enhanced absorption spectroscopy) for concentration assessment of trace gas, measurement of aerosol extinction - Infrared tunable laser absorption spectroscopy (IR-TDLAS) for isotopic composition analysis - Short-noise limited detection of reactive molecule (OH radical) by FRS - Modern PAS technique: QEPAS (quartz-enhanced photoacoustic spectroscopy) - Doppler-limited high resolution spectroscopy

5 Metrology of trace species by laser induced fluorescence and incandescence 5.1 Theoretical and experimental principles of Laser Induced Fluorescence (LIF) and Laser Induced Incandescence (LII) 5.2 Application to the measurement of gas and/or particulate environmental pollutants

6 Condensed phase analysis using laser-based techniques 6.1 Condensed phase sampling by laser ablation/desorption via electronic or vibrational energy coupling 6.2 Ultra-sensitive mass spectrometry detection: principles and instrumentation 6.3 Resonance-Enhanced Multi-Photon Ionization (REMPI) via electronic transitions (UV) 6.4 LIBS (Laser Induced Breakdown Spectroscopy), space- and time-resolved optical emission spectroscopy, LA/ICP/MS (laser ablation/inductively coupled plasma/mass spectrometry) 6.5 Applications to the analysis of complex environmental samples (lab work)

Responsable

cristian Focsa
Phlam
Adresse Mel : Cristian.Focsa@univ-lille1.fr
Téléphone : 03 20 33 64 84

Documents

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