What equipment is used for two-dimensional IR spectroscopy and how can the molecular structure of a compound be resolved?
You can find a schematic drawing of the box-CARS 2D IR setup in the publication 
Enhancing signal detection and completely eliminating scattering using quasi-phase-cycling in 2D IR experiments, Robbert Bloem, Sean Garrett-Roe, Halina Strzalka, Peter Hamm, Paul Donaldson

https://pdfs.semanticscholar.org/e134/cdbb98a8d899a17848f8242c8160d4913f0f.pdf