Transient Response : Transient Response

Requires: S-Pisces/Luminous
Minimum Versions: Atlas 5.24.1.R

This example deals with time domain response of the device to time dependent optical sources. This example will extract the transient response of the device to an optical source being "turned off".

The first and second sections of the input file are the same as in the DC example described previously. The first section specifies that the device structure is read in from an external file. The second section specifies the material models used. The third section of the file specifies a normally incident monochromatic source. The wavelength of the source is 623 nm, equivalent to a HeNe laser wavelength.

The fourth section of the input file sets the initial biasing conditions of the device. Here again the device is biased to 2.0 volts.

The last section of the input file specifies the transient. In this case the DC solution at a source intensity of 5 W/cm^2 is obtained. Then, the source intensity is ramped linearly to 0 over a time of 1 ns. Terminal data is then collected over the next 9 ns. The terminal data is saved to the log file.

The results of the example are viewed in TonyPlot. They compare the available photo current with the cathode current as a function of time. In this case the cathode current lags the source transient by a fraction of a nanosecond.

To load and run this example, select the Load button in DeckBuild > Examples. This will copy the input file and any support files to your current working directory. Select the Run button in DeckBuild to execute the example.