http://arxiv.org/abs/1908.05510
We developed a UV-transparent lens array that can increase the photon detection efficiency of a silicon photomultiplier (SiPM) array comprising of 64 pixels ($3\times3$ mm$^2$ each) and 0.2-mm gaps. Through the plano-convex spherical lens on each $3.2\times3.2$ mm$^2$ region, we showed that the loss of photon detection efficiency due to the pixel gaps could be recovered as the incident photons get concentrated on the sensitive regions of the SiPM array. By using a prototype lens array, we achieved approximately 10%-30% relative increase in photon detection efficiency in our target angles of incidence of 30-60 deg.
A. Okumura, A. Asano, K. Furuta, et. al.
Fri, 16 Aug 19
8/54
Comments: Accepted for publication in the Proceedings of the 5th International Workshop on New Photon-Detectors (PD18)
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