High-resolution light spot localization with photodiode arrays

Anno: 1984

Autori: Bertani D., Cetica M., Ciliberto S., Francini F.

Affiliazione autori: Istituto Nazionale di Ottica, Largo E. Fermi 6, 50125 Firenze, Italy

Abstract: We describe two analog electronic techniques to determine the position of a light spot on a linear photodiode array by detecting its intensity peak or its centroid. The position was detected with an accuracy of 1 and 3.5 µm by the two methods, respectively, using a 16-µm center-to-center array. As an example, the displacement of a mirror was measured with a sensitivity of 0.05 µm.


Volume: 55 (8)      Da Pagina: 1270  A: 1272

Parole chiavi: Semiconductor diodes, photodiode; Photodetectors
DOI: 10.1063/1.1137914

Citazioni: 8
dati da “WEB OF SCIENCE” (of Thomson Reuters) aggiornati al: 2024-04-21
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