A terahertz and infrared sensitive photomultiplier tube with a fieldmixing photocathode

A terahertz and infrared sensitive photomultiplier tube with a fieldmixing photocathode

In this work, we present a photomultiplier tube (PMT) with a metasurface photocathode that is based on ultrafast field emission (FE) from incident terahertz (THz)- and infrared (IR) light. We mix the incident electric field with the electric field from an electronic source to decrease the PMT detect...

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Bibliographic Details
Published in:2020 45th International Conference on Infrared, Millimeter, and Terahertz Waves (IRMMW-THz) p. 1
Main Authors: Lange, Simon L., Noori, Narwan Kabir, Kawai, Naoya, Jepsen, Peter U.
Format: Conference Proceeding
Language:English
Published: IEEE 08-11-2020
Subjects:
Cathodes
Electric fields
Electron tubes
Iron
Metasurfaces
Photomultipliers
Photonics
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Description
Summary:In this work, we present a photomultiplier tube (PMT) with a metasurface photocathode that is based on ultrafast field emission (FE) from incident terahertz (THz)- and infrared (IR) light. We mix the incident electric field with the electric field from an electronic source to decrease the PMT detection threshold. Due to the pronounced non-linearity of FE, this approach allows for extremely sensitive light detection - possibly down to few or even single photon level across the entire THz- and IR frequency range.
ISSN:2162-2035
DOI:10.1109/IRMMW-THz46771.2020.9370591