  Raman scattering is a chemically selective probing mechanism with diverse
applications in industry and clinical settings. Yet, most samples are optically
opaque limiting the applicability of Raman probing at depth. Here, we
demonstrate chemically selective energy deposition behind a scattering medium
by combining prior information on the chemical's spectrum with the measurement
of a spectrally resolved Raman speckle as a feedback mechanism for wavefront
shaping. We demonstrate unprecedented six-fold signal enhancement in an
epi-geometry, realizing targeted energy deposition and focusing on selected
Raman active particles.
