Spatial Imaging Identification in a Fiber-Bundle Confocal Fluorescence Microspectrometer

We have developed a CCD-based fiber-bundle confocal fluorescence microspectrometer exhibiting a spectrum of individual fiber spots on the CCD. The development led to a new technique, spatial imaging identification, and revealed the sources of various signals based on the spatial distribution of a signal in the spectral images. The new technique allows for easy alignment of the optics and discrimination of various interference lights. The potential application to surface analysis is also emphasized.