The optical system consists of excitation optics and collection optics. The excitation
optics consist of the laser and lenses that are used to shape and focus the laser beam.
The collections optics consist of a collection lens to collect light emitted from the
particle–laser beam interaction and a system of optical mirrors and filters to route
specified wavelengths of the collected light to designated optical detectors. The design
of the optical bench allows for these functions to occur.