Raman scattering is an important tool for materials characterization and fundamental research in condensed matter physics. The equipment in our Raman laboratory allows both.
The basic setup of the Raman Lab within the William H. Miller III Department of Physics & Astronomy is as follows:
T64000 Jobin-Ivon Horiba triple monochtomator spectrometer CCD LN2 cooled detector
- Raman shifts down to 5 cm-1
- Spectral resolution down to 2 cm-1
- Single monochromator option (514.5 nm, down to 50 cm-1) for measurements of very low signals
Ar+Kr ion Spectra-Physics laser: excitation lines in the range from 488 to 672 nm makes resonance Raman measurements possible.
Micro-Raman measurements: using an Olympus microscope allows us to measure small samples of various configurations, this method is extremely useful for material science and characterization of crystals of new material
- Sampling probe diameter 2 μm
- Frequency range: down to 50 cm-1
- Measurements at temperatures 300-4 K
We are also equipped with the possibilities of mapping of the sample surface using Raman scattering:
- An automatic mapping stage allows mapping of a sample surface 1 cm*1 cm with spatial resolution 2mm
- Duoscan option allows mapping of a surface 20mm* 20mm with spatial resolution 0.5 mm.
An example of micro-Raman measurement at low temperatures:
Measured at 20 K single crystal of KNi2Se2 sealed in a quartz capillary