Detection limits of a nip a-Si: H linear array position sensitive detector

R. Martins, D. Costa, H. Águas, F. Soares, A. Marques, I. Ferreira, P. Borges, E. Fortunato

Research output: Contribution to journalArticlepeer-review


This paper presents results of the spatial and frequency detection limits of an integrated array of 32 one-dimensional amorphous silicon thin film position sensitive detectors with a nip structure, under continuous and pulsed laser operation conditions. The data obtained show that 0.45×0.06 cm arrays, occupying a total active area of about 1 cm2 have a spatial resolution better than 10 μm (modulation transfer function of about 0.2), with a cut-off frequency of about 6.8 KHz. Besides that, under pulsed laser conditions the device non-linearity has its minimum (about 1.6%), for a frequency of about 200Hz. Up to the limits of the cut-off frequency, the device non-linearity increases to values above 4%.

Original languageEnglish
Pages (from-to)507-512
Number of pages6
JournalMRS Proceedings
Publication statusPublished - 2004


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