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arXiv · 1908.05510

Development of a UV-transparent Lens Array for Enlarging the Effective Area of Multichannel SiPMs

Akira Okumura·Akira Asano·Kazuhiro Furuta·Naoya Hidaka·Yuki Nakamura·Hiroyasu Tajima·Anatolii Zenin
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Abstract

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.

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Akira Okumura, Akira Asano, Kazuhiro Furuta, Naoya Hidaka, Yuki Nakamura, Hiroyasu Tajima, Anatolii Zenin. 2019-08-15. Development of a UV-transparent Lens Array for Enlarging the Effective Area of Multichannel SiPMs. https://doi.org/10.7566/jpscp.27.011009

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