Emission from hot charge carriers during the formation of high-field autosolitons in electron-hole plasma in n-Ge

Abstract

The evolution of the spatial distribution of photogenerated electron-hole plasma in n-Ge samples during charge-carrier heating by an electric field at T=77 K was studied. A multiprobe system was used, and the infrared emission from the sample in the wavelength range of λ=1.65–10 µm was measured to clarify the processes of contact exclusion, direction reversal in the bipolar plasma drift, the formation of high-field thermal-diffusion autosolitons, and lattice heating in the vicinity of an autosoliton.