Description
Metasurfaces provide a versatile and lightweight alternative to conventional optical components, making them attractive for future space-based imaging, sensing, and communications systems. However, their use in space requires confidence that the nanostructured optical surface can withstand the mechanical and thermal environments experienced during launch and operation of a space-based payload. This work presents the development of a space qualification approach for a metasurface, combining vibration, shock, and thermal vacuum testing representative of space conditions. The optical performance of the metasurface is modelled across the temperature cycle to evaluate temperature-dependent changes in its optical response. Finite element modal analysis was performed on a single metasurface pillar to determine its natural vibrational frequencies and assess its expected response to mechanical excitation. The metasurface samples were housed within lens-tube assemblies and subjected to vibration and shock testing in accordance with NASA’s Goddard General Environmental Verification Standard, GSFC-STD-7000. In addition, thermal vacuum testing was performed to assess whether exposure to low pressure and temperature cycling affects the structural integrity or optical performance of the metasurface. Pre- and post-test optical inspection and performance measurements were used to determine whether the testing regime produced changes in optical efficiency and optical performance. This work provides a framework for evaluating the environmental durability of metasurface optics and supporting their qualification for future space-based applications.
| I am the presenting author | Yes |
|---|