Raman Spectrometer (custom built multi-wavelengths)


The Micro-Raman Spectrometer uses a fingerprint technique to identify materials based on vibrations. Its sensitivity can give information on composition and strain.


  • 4 lasers: 355nm, 532 nm, 633nm and 785 nm
  • Spatial resolution: ~ 0.5 microns
  • Spectral resolution: < 1 cm-1
  • 3 spectrometers: depending on applications:
    • 300 mm visible
    • 750 mm visible
    • 300 mm Near IR optimized Si detector
  • Can collect down to 5 cm-1 with 532nm laser.
  • Polarization control (both incident laser (including circularly polarized incident laser and signal)
  • Raman mapping capabilities (New high-resolution stage installed in 2017)
  • Photoluminescence

No or minimal sample preparation

  • Nondestructive
  • Works for most liquid, gas or solid
  • Pure phase, multi-phases, glasses, single crystals and even artwork, such as paintings

Some applications

  • Phase identification (compare to a published spectrum/ standard) • investigate small chemical/structural
  • Strain/defects in some material
  • Sample mapping
  • In situ characterization at high pressure and or temperature or within a medium

Some limitations

  • Most metals are difficult or impossible to observe
  • Sample fluorescent
  • Symmetry of the material


Emmanuel Soignard
Operations Director

Douglas Daniel
Associate Research Professional

  • Optical spectroscopy
Documents and manuals
ASU Unit
Knowledge Enterprise
Cost for ASU Internal Cost for ASU Internal with Staff Assistance Cost for Other Academic/Non-Profit Cost for Other Academic/Non-Profit with Staff Assistance