SCALE Radiation Response of AlGaInAs-InP Multi-Quantum-Well Continuous Laser Diodes

This presentation discusses the radiation response of AlGaInAs-InP multi-quantum-well continuous laser diodes, specifically in the context of space applications. The author presents experimental results showing that proton irradiation can cause significant changes to the device's performance, including an increase in threshold current and a shift in wavelength. These effects are attributed to displacement damage caused by the protons, which alter the material's properties and lead to degradation of the laser's optical characteristics.
The presentation also touches on the implications of these findings for space-based applications, particularly in Low Earth Orbit (LEO) environments where proton irradiation is a significant concern. The author notes that heavy ions could potentially cause even more damage, but this has not been extensively studied due to the high doses required to produce measurable effects. Additionally, the presentation mentions that neutral terrestrial neutrons are unlikely to have a significant impact on commercial products over time, although they may be relevant in certain niche applications such as nuclear reactors or propulsion systems.