A high-precision wavefront manipulator for astronomy and optical communication applications
The TTP-DM (Tip-Tilt-Piston Deformable Mirror) is an enabling component for precise, high speed wavefront control. With 331 independent mirror segments controlled to under 1 nm of precision and no hysteresis, this system is ideal for demanding applications in astronomy and optical communication. Each segment has three piston actuators, allowing three degrees of freedom. The high-speed electronics driver is capable of 60 kHz frame rate and 14 bit step resolution. Originally developed for the Jet Propulsion Laboratory under an SBIR contract, the TTP-DM will be used for a visible-nulling coronograph as part of the Terestrial Planet Finder – Coronagraph (TPF-C) program to control subaperture wavefront phase (piston) and amplitude (tip/tilt).