Abstract
Spatial resolution, described by the modulation transfer function (MTF), is very important for multidimensional infrared sensors. The sensor-MTF of a pyroelectric linear array is determined by the geometric, thermal and capacitive MTF. These are calculated in detail by the use of a pyroelectric linear array developed at Dresden University of Technology, Institute for Solid-state Electronics. The linear array has 128 pixels with a centre-to-centre spacing of 100 μm. Deuterated and l-alanine doped triglycine sulfate (DTGS:L-A) or lithium niobate (LiNbO 3) are used as pyroelectric materials. Finally, the theoretical results are substantiated by measurements.
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