Compressed spectral imaging with a spectrometer

•Image of two-dimensional object is obtained with a spectrometer without scanning.•The information in both spatial and spectral domains is measured simultaneously.•The spatial and spectral resolutions have a tradeoff relationship.

We report an experimental demonstration of spectral imaging with a spectrometer without any scanning. The spatial resolution is provided by spatial light modulation based on the theory of compressed sensing. Objects with both continuous and discrete spectrum are used to demonstrate the performance of our system, which shows wide-spectrum and high efficient spectral imaging ability. The spatial and spectral resolutions of our imaging system are also discussed.