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The objective of this program is to understand the effects of space radiation on multiple-quantum-well (MQW) photonic devices through a coordinated program of experimental characterization, analysis, and modeling. The work has focused on MQW laser diodes. Photonic devices based on MQW technology are widespread in both commercial and military applications. Such devices and systems offer an ideal opportunity for understanding the effects of the space radiation environment on nano-structures and provide insight into the physics of radiation effects on a class of devices that will revolutionize future electronic and optoelectronic systems. In this program, we have looked at proton-irradiation effects in MQW laser diodes, quantum dots, and high-electron mobility transistors. Irradiation has been performed using high-energy protons because they produce both long-term ionization damage and displacement damage.

The objective of this program is to understand the effects of space radiation on multiple-quantum-well (MQW) photonic devices through a coordinated program of experimental characterization, analysis, and modeling. The work has focused on MQW laser diodes. Photonic devices based on MQW technology are widespread in both commercial and military applications. Such devices and systems offer an ideal opportunity for understanding the effects of the space radiation environment on nano-structures and provide insight into the physics of radiation effects on a class of devices that will revolutionize future electronic and optoelectronic systems. In this program, we have looked at proton-irradiation effects in MQW laser diodes, quantum dots, and high-electron mobility transistors. Irradiation has been performed using high-energy protons because they produce both long-term ionization damage and displacement damage.