Raman spectrometer (in-house) optimized for DAC

The spectrometer is equipped with an optical input entirely designed in-house, specially adapted to the diamond anvil cell. In terms of numerical aperture, this design offers exceptional brightness while sacrificing very little resolution (2 cm^-1). As for spatial resolution, confocal optics allow 3 to 5 microns to be achieved. This makes it possible to measure the sample specifically — and not the surrounding diamond anvils — or to analyse only the area heated by the laser, discriminating the signal coming from the cold untransformed parts.

The measurement system is a 500 mm focal length Andor Shamrock spectrometer equipped with an Andor iDUS detector with a back-illuminated CCD (quantum efficiency > 90% between 500 and 700 nm) cooled by Peltier to -90 °C. The whole system is driven by a Laser Quantum Nd:YAG air-cooled diode laser doubled at 532 nm, delivering 500 mW in single-mode longitudinal mode.

The equipment is available to external users under certain conditions. Please contact the scientific manager in advance to discuss the feasibility of the project.