Compressive raman

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To overcome some of the limitations of Raman Emission, it is possible to exploit highly sensitive light-detectors, like a Single-Photon-Avalanche-Photodetector (SPAD). However, to acquire a spectrum with a point detector, it is necessary to create a secondary scan direction in wavelength.

This can be achieved with a moving grating that directs different parts of the spectrum to the detector, or with the use of a spatial light modulator such as a DMD array (see: [[@gentner2023Compressive Raman microspectroscopy parallelized by single-photon avalanche diode arrays]])

Another idea is to use a line excitation coupled to a line-detector (such as a SPAD array) via a diffraction grating and a DMD. In this way it is possible to perform spectroscopy in several sites in parallel.

I wonder if there would be an application where the triggers from a neuromorphic detector can be used to optimize the information extracted from a tunable spectral filter.

Valuable reading the thesis of Camille Scotté: [[@scotteSpontaneous Compressive Raman technology: developments and applications]]


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Aquiles Carattino
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