← Back to NASA Technology Projects
Completed TRL 3 (started at 2, targeting 3)
We proposed to study the concept of using laser metrology as alternative edge sensing option for wavefront control between the segments of primary mirror of LUVOIR telescope. Similar approach has been adopted by Giant Magellan Telescope (GMT), which has a 25.4 meter diameter primary mirror. The primary mirror was constructed by seven 8.4 meter segments. In order to maintain wavefront stability, optical based edge sensor was implemented between those seven segments. In this study, different options will be considered including commercially available free space or fiber optics and the emerging photonics integrate circuits (PIC). The goal of this work is to study advantages and disadvantages between different optical systems and determine the most efficient and accurate measurement method to implement laser metrology edge sensing for LUVOIR’s primary mirror.
Current LUVOIR concept which employs capacitive edge sensors falls short of the wave front control derived requirements (< 4 picometer at 10-100 Hz rate). Laser metrology is capable of detecting pico-meter variation over a 2.5-million-kilometer distance range (LISA mission) Compact PIC base laser allows easy deployment on each segments of mirror
Listed on TechPort itself — the most direct way to ask about this specific project.
This is early/mid-stage (TRL 3) — the most realistic path in is NASA SBIR/STTR, which funds small businesses and research institutions to develop technology aligned with NASA's needs (equity-free, phased funding). Check whether a current SBIR/STTR solicitation topic overlaps with this project's technology area, or contact the project directly (above) to ask.
None of these are guaranteed paths for this specific project — TechPort itself doesn't have an "apply" button. Reaching out to the contact(s) above with a specific question is usually the fastest way to find out what's actually open.