Laser spectroscopy techniques
Laser sources - Analysis and characterization

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P2685 V3 Article

Laser spectroscopy techniques
Laser sources - Analysis and characterization

Authors : Sylvain LAZARE, Éric MOTTAY

Publication date: June 10, 2007 | Lire en français

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3. Laser spectroscopy techniques

In absorption spectroscopy, photons are counted at each wavelength, before and after passing through the medium to be analyzed. Laser sources are often used for their intensity, line sharpness, coherence, directivity and focusability.

3.1 Scattering-based techniques, Rayleigh, Mie, Raman

Scattering measurements benefit from the laser because their effective cross-sections are generally small (table 5 ). The transition mechanisms are summarized in figure 18 .

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