GaP Raman Terahertz (GRT) Spectrometer using High Resolution Cr:forsterite Lasers

We have developed high resolution GaP Raman THz (GRT) spectrometer using Cr:forsterite lasers with gratings. Line-width below 1.5 GHz and wide tunable frequency range (0.6 -6.2 THz) of the GRT enables to measure materials which have sharp absorption bands, such as gases or solid samples at low temperature with sufficient resolution.