UMARS Spectroscopy and its Applications
UMARS: Universal Multiple Angle Spectroscopy
UMARS: Universal Multiple Angle Raman Spectroscopy is a technique in which collection of Raman signature from any direction irrespective of source position is possible. This works on multiple scattering principles, using many collection angles simultaneously to probe any type of scattering samples at varying depths using optical fibers. This technique allows Detection of Raman signals from all the observable angles and provides more depth of penetration which has potential applications in non invasive 3D imaging in materials and bio-medical optical imaging.
Our work mainly deals with 3D Raman imaging in biomedical and security applications. In
Biomedical applications we mainly deal with tumor detection, tissue imaging, and bone and skin disorder detection. We also focus on improvement of imaging at high depth in turbid medium. In Security applications we look for explosive and harmful chemical detection hidden inside a container.
Our lab is equipped with a laser system of 830, 785nm, a high resolution imaging spectrometer with three tuneable gratings, fiber optics for illumination and Raman signal collection, optics including lenses, mirrors, filters etc, optomechanics including fiber holders, translation and rotation stage mounts etc. In electronics we have oscilloscope, variable power supply, electronics components, FPGA boards etc.