Title :
SPAD-array photoresponse is increased by a factor 35 by use of a microlens array concentrator
Author :
Randone, Enrico ; Martini, Giuseppe ; Fathi, Mohammad ; Donati, Silvano
Author_Institution :
Dipt. di Elettron., Univ. di Pavia, Pavia, Italy
Abstract :
Using an array of 32times32 plano-convex microlenses, fabricated by co-polymer casting in a photoresist replica mold, we have been able to increase the detection sensitivity of a SPAD (Single Photon Avalanche Detector) array of 32times32 pixels, 50-mum pitch, up to a factor of 35.
Keywords :
avalanche photodiodes; microlenses; optical arrays; optical fabrication; optical polymers; photoresists; polymer blends; SPAD detection sensitivity; SPAD-array photoresponse; co-polymer casting; photoresist replica mold; plano-convex microlens array concentrator fabrication; single photon avalanche detector array; Casting; Circuits; Detectors; Lenses; Microoptics; Optical arrays; Optical scattering; Resists; Sensor arrays; Shape; (040.00040) Detectors; (040.1240) Arrays; (220.1770) Concentrators;
Conference_Titel :
LEOS Annual Meeting Conference Proceedings, 2009. LEOS '09. IEEE
Conference_Location :
Belek-Antalya
Print_ISBN :
978-1-4244-3680-4
Electronic_ISBN :
1092-8081
DOI :
10.1109/LEOS.2009.5343222
