Remote Raman/LIF spectroscopy

Raman spectroscopy at low laser intensity is non-invasive and gives very specific molecular characterisation of materials. Remote Raman spectroscopy at standoff distances of up to tens of metres can be used to conveniently analyse any spot on a monument/object from the ground level without having to move the instrument. Given the non-invasive nature of the technique, it can also be used for mapping an area remotely (macro Raman mapping). The same laser that induces Raman scattering will also induce fluorescence which is collected simultaneously. It can be used with complementary techniques such as remote reflectance spectral imaging for a more complete identification of a material.