PPC-BAH has developed LEDs, LED arrays, dual color LEDs and spectrally matched detectors. The quantum-well structures of the devices are grown using an advanced Molecular Beam Epitaxy (“MBE”) machine, which allows for precise tuning of the spectral response of the devices from 2 to 10 µm. We offer a unique technology of mid-IR LED arrays that can be used for testing infrared vision and tracking systems.
Left, the MBE machine, right mid-IR LED-receiver chip developed by PPC-BAH.
The next figure show performance of 1 and 2-stage cascade LEDs at room temperature. The 2-stage cascade LED generated optical power as high as 11 mW at room temperature.
Left, normalized electroluminescence of the 1-stage and 2-stage LEDs measured from 20 °C to 50 °C with a 5 °C step under pulse mode (100 kHz, 5%). Right, Light-Current-Voltage of the 1-stage and 2-stage LEDs measured at 20 °C.