Hyperspectral Raman Imaging Spectroscopy System

Raman spectroscopy is a rapid and nondestructive analytical tool that yields highly compound-specific information for chemical analysis without prior labeling. However, conventional spectroscopy offers only spectral information without specific wavelength (Raman shift) image at desired sample area. Therefore, Hyperspectral Raman system, which provides a hybrid of spectroscopic information and rendered images at specific wavelength, is a vast interest in developing new optical techniques to monitor the various molecular species. The use of acousto-optic tunable filter (AOTF) as programmable gratings allows fast and tunable over a wide spectral range to acquire specific wavelength Raman images within that spectra range and field of view. I built this system at Professor Henry Du’s lab, Stevens Institute of Technology, when I was a graduate student.