We have built a coherent two-dimensional spectrometer tunable over the visible and near-IR (475 – 950 nm) ranges, delivering 15-fs pulses at the sample position. A special feature of our setup is its sample area, which is optimized for 2D materials, featuring small sizes of only a few tens of microns, as well as large heterogeneity. We assembled a home-built confocal microscope in the detection line, which we can use for real or k-space imaging but also linear spectroscopy (reflectivity, PL, absorption).

Another tool we built is angle-resolved spectroscopy, to image polariton dispersion or dipole orientation in nanomaterials. This is a very powerful technique to investigate metamaterials or exciton-polaritons. You can see a recent example here.