A Miniature Spatial Heterodyne Uv Raman Spectrometer for Planetary Exploration: Proof of Principle for Smallsat Standoff Operations Using a Cell-phone

We are developing a new type of miniature Fourier transform (FT) Raman spectrometer; the spatial heterodyne Raman spectrometer (SHRS), which provides high spectral resolution in a very small system with high light throughput. The resolution of the SHRS is not dependent on a slit, so miniature systems, <1 cm footprint, can be made with high spectral resolution. The ability to miniaturize the SHRS was recently demonstrated using a standard cell-phone as the detector and imaging optics in a SHRS with 2.5 mm sized diffraction gratings. A preliminary design of a standoff SHRS compatible with a 1U SmallSat architecture has also been demonstrated.