Detection limits of a nip a-Si:H linear array position sensitive detector
- Citation:
- Martins, R.a, Costa Águas Soares Marques Ferreira Borges Fortunato D. a H. a. "Detection limits of a nip a-Si:H linear array position sensitive detector." Materials Research Society Symposium Proceedings. Vol. 808. 2004. 507-512.
Abstract:
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%.
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