Question: Consider a double heterostructure GaAs/AlGaAs amplifier Current is injected into the device and the following observation is made:

Question:

Consider a double heterostructure GaAs/AlGaAs amplifier Current is injected into the device and the following observation is made: When the current density J is 16KA/cm2, the peak gain coefficientp is 60 cm-1and when no current is injected,p= -200 cm-1. Determine the transparency current density JT.