The noise performance of an infrared injection photon detector with very high internal gain was investigated at a wavelength of 1.55 μm. The devices showed sub-Poissonian shot noise with Fano factors around 0.55 at 0.7 V at room temperature. Optical to electrical conversion factors of 3000 electrons per absorbed photon were recorded at 0.7 V. The change in noise-equivalent power with respect to bias voltage was evaluated. The optical to electrical conversion factor and Fano factor were measured under increasing illumination and compared to theoretical expectations.
ASJC Scopus subject areas
- Atomic and Molecular Physics, and Optics