Description
The Micro-Raman Spectrometer uses a fingerprint technique to identify materials based on vibrations. Its sensitivity can give information on composition and strain.
Capabilities
- 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
Contact
Douglas Daniel
Associate Research Professional
DDaniel@asu.edu
480-727-8383
Emmanuel Soignard
Operations Director
Emmanuel.Soignard@asu.edu
480.965.7242
Techniques
- Optical spectroscopy
Documents and manuals
- File
- Fileraman_operation_18.pdf1.05 MB
ASU Unit
Knowledge Enterprise
