Figure 2.

Control flow of the MMS instrument software in which the Raman, reflectance, and fluorescence signals are collected sequentially through the optical fiber switch. Collection of the Raman signals is facilitated by opening the laser shutter and triggering the camera to collect a spectrum for a specified amount of time. Collection of the reflectance signal is facilitated by appropriately triggering the Xe lamp and the camera gate. The fluorescence signal is collected by triggering the nitrogen laser and the camera gate.