  We report on the experimental observation of beaming elastic and surface
enhanced Raman scattering (SERS) emission from a bent-nanowire on a mirror
(B-NWoM) cavity. The system was probed with polarization resolved Fourier plane
and energy-momentum imaging to study the spectral and angular signature of the
emission wavevectors. The out-coupled elastically scattered light from the kink
occupies a narrow angular spread. We used a self-assembled monolayer of
molecules with a well-defined molecular orientation to utilize the out-of-plane
electric field in the cavity for enhancing Raman emission from the molecules
and in achieving beaming SERS emission. Calculated directionality for elastic
scattering and SERS emission were found to be 16.2 and 12.5 dB respectively.
The experimental data were corroborated with three-dimensional numerical finite
element and finite difference time domain based numerical simulations. The
results presented here may find relevance in understanding coupling of emitters
with elongated plasmonic cavities and in designing on-chip optical antennas.
