The remote Raman system uses continuous wave lasers at 785 nm. The laser beam is coaxial with the collection optics consisting of a telescope and a spectrometer with a cooled detector. The spectrometer provides a Raman Shift range of 90cm-1 – 3050 cm-1 at a spectral resolution of 4 cm-1. The system normally operates with a focussed beam of 1mm spot size. The incident power on the sample is thus orders of magnitude lower than typically used in micro-Raman for cultural heritage materials. The whole system is placed on a computer-controlled pan/tilt stage allowing automated mapping of a region. A small camera is also attached to the system to record the position where the Raman data is taken.

Dataset
Dataset/Data package (images, spectra, other)

Noncontact (no physical contact)
Nondestructive (no permanent damage or alteration)
Noninvasive (no physical alteration)

ISAAC in-house developed instrument

small spot