Modification of the CCD photodetectors for the suppression of interference in their internal structure

Abstract

In this work the reasons leading to the occurrence of interference in the internal structure of the common CCD photodetectors are discussed, that result in degradation of the metrological characteristics of the spectrometers based on them. Methods of removing a protective glass of the photodetector are shown. Possibility of modification of the CCD photodetectors for suppressing the interference by applying the surface phosphor layer is analyzed. It is experimentally confirmed that the proposed method allows achieving almost complete suppression of interference and also increasing the sensitivity of the detector to the radiation in the UV part of the spectral range.