1 September 2006 Risley prism beam pointer
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Abstract
Ball Aerospace & Technologies Corp. (Ball Aerospace) has developed a Risley Beam Pointer (RBP) mechanism capable of high pointing accuracy and operational bandwidth. The prisms offer a wide field of regard (FOR) and can be manufactured and operated with diffraction-limited optical quality. The unit is capable of steering a 4-in. diameter beam over a 72° half angle cone with better than 100 μrad precision. Absolute accuracy of the beamsteering is in the range of 100 μrad to 1 mrad, depending on the thermal environment of the system. The system has demonstrated a control bandwidth of 23 Hz and better than 10 deg/sec of smooth target tracking anywhere within the FOR.
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Miroslaw Ostaszewski, Miroslaw Ostaszewski, Steven Harford, Steven Harford, Neil Doughty, Neil Doughty, Charlie Hoffman, Charlie Hoffman, Michael Sanchez, Michael Sanchez, David Gutow, David Gutow, Robert Pierce, Robert Pierce, "Risley prism beam pointer", Proc. SPIE 6304, Free-Space Laser Communications VI, 630406 (1 September 2006); doi: 10.1117/12.679097; https://doi.org/10.1117/12.679097
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