Coherent Raman scattering microscopy
Coherent Raman scattering (CRS) microscopy is a multi-photon microscopy technique based on Raman-active vibrational modes of molecules. The two major techniques in CRS microscopy are stimulated Raman scattering (SRS) and coherent anti-Stokes Raman scattering (CARS).
Source: Wikipedia — Coherent Raman scattering microscopy (CC BY-SA 4.0)