Raman spectroscopy is a powerful technique that can be used to obtain detailed chemical information about a
system without the need for chemical markers. It has been widely used for a variety of applications such as
cancer diagnosis and material characterization. However, Raman scattering is a highly inefficient process,
where only one in 1011 scattered photons carry the needed information. Several methods have been developed
to enhance this inherently weak effect, including surface enhanced Raman scattering and coherent anti-Stokes
Raman scattering. These techniques suffer from drawbacks limiting their commercial use, such as the need
for spatial localization of target molecules to a ‘hot spot’, or the need for complex laser systems.
Here, we present a simple instrument to enhance spontaneous Raman scattering using elastic light scattering.
Elastic scattering is used to substantially increase the interaction volume. Provided that the scattering
medium exhibits very low absorption in the spectral range of interest, a large enhancement factor can be
attained in a simple and inexpensive setting. In our experiments, we demonstrate an enhancement of 107 in
Raman signal intensity. The proposed novel device is equally applicable for analyzing solids, liquids, and