A Terahertz And Infrared Sensitive Photomultiplier Tube With A Field-mixing PhotocathodePaper (OPTO2)
Wed, 11 Nov 2020 01:00am to 01:15am
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.
Download Abstract: pid6419779_0.pdf
Authors: Lange, Simon; Noori, Narwan Kabir; Kawai, Naoya; Jepsen, Peter Uhd
Hamamatsu Photonics, Technical University of Denmark