4 February 2013 A 48-pixel array of single photon avalanche diodes for multispot single molecule analysis
Author Affiliations +
Abstract
In this paper we present an array of 48 Single Photon Avalanche Diodes (SPADs) specifically designed for multispot Single Molecule Analysis. The detectors have been arranged in a 12x4 square geometry with a pitch-to-diameter ratio of ten in order to minimize the collection of the light from non-conjugated excitation spots. In order to explore the tradeoffs between the detectors’ performance and the optical coupling with the experimental setup, SPADs with an active diameter of 25 and of 50μm have been manufactured. The use of a custom technology, specifically designed for the fabrication of the detectors, allowed us to combine a high photon detection efficiency (peak close to 50% at a wavelength of 550nm) with a low dark count rate compatible with true single molecule detection. In order to allow easy integration into the optical setup for parallel single-molecule analysis, the SPAD array has been incorporated in a compact module containing all the electronics needed for a proper operation of the detectors.
© (2013) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Angelo Gulinatti, Angelo Gulinatti, Ivan Rech, Ivan Rech, Piera Maccagnani, Piera Maccagnani, Massimo Ghioni, Massimo Ghioni, } "A 48-pixel array of single photon avalanche diodes for multispot single molecule analysis", Proc. SPIE 8631, Quantum Sensing and Nanophotonic Devices X, 86311D (4 February 2013); doi: 10.1117/12.2003984; https://doi.org/10.1117/12.2003984
PROCEEDINGS
8 PAGES


SHARE
Back to Top