Superconducting Nanowire Single-Photon Detectors offer the capability to detect electromagnetic
waves on a single photon level in a wavelength range that far exceeds that of alternative
detector types. However above a certain threshold wavelength the efficiency of those
detectors decreases stronlgy leading to a poor performance in the far-infrared range.
Influences on this threshold are studied and approaches for improvement are verified
experimentally by measurement of the device performance.
