Laser Microspectral Analysis

Gather, process and present information to:

– describe the methodology involved in laser microspectral analysis

– assess the importance of the technology in assisting identification of elements in a compound

– provide examples of the technology’s use

Light Amplification by Stimulated Emission of Radiation (LASER)

  • Upon excitation of electrons, emission spectrum is produced after the electrons has reached the ground state
  • Described as intense beam of very pure single colour
    • Monochromatic
    • Powerful
    • Coherent
  • Analysis requires vaporization and even destruction of a sample the pigment being analysed
  • Vapour is fed through a gap between two sparking electrodes
  • Important technique which is used for the determination of composition of elements
  • The technology is widely applied for the restoration of pigments