Large high-performance fast steering mirrors with FPGA-embedded controls

Felix E. Morgan; Steven R. Wasson; Jamison J. London; Joshua V. Kern; Martin G. Smith; Rebecca Sullivan; Richard E. Owen

doi:10.1117/12.829050

11 August 2009 Large high-performance fast steering mirrors with FPGA-embedded controls

Felix E. Morgan, Steven R. Wasson, Jamison J. London, Joshua V. Kern, Martin G. Smith, Rebecca Sullivan, Richard E. Owen

Author Affiliations +

Proceedings Volume 7466, Advanced Wavefront Control: Methods, Devices, and Applications VII; 74660H (2009) https://doi.org/10.1117/12.829050
Event: SPIE Optical Engineering + Applications, 2009, San Diego, California, United States

Abstract

The wavefront control community relies on fast and accurate subsystems for optical tilt correction. New technology enables large diameter (172 mm), optically-flat (<32 nm rms surface error), highly accurate, fast (500 Hz) steering mirrors (FSMs) with very low stabilization errors (50 nrad jitter). Applied Technology Associates (ATA) builds and tests FSMs using Silicon Carbide lightweight optics on very rigid aluminum mounts. Optical encoders provide position feedback and the mirror control algorithms are embedded in an FPGA processing architecture with fabric-based doubleprecision arithmetic capability. To characterize mirror performance, ATA integrated a performance verification system using an xPC MATLAB-based Track Loop Controller to close a 200 Hz optical loop around the FSM. This paper describes the mirror and FPGA control that enables a new level of FSM stabilization performance and presents both modeled and measured performance for the system.

Citation Download Citation

Felix E. Morgan, Steven R. Wasson, Jamison J. London, Joshua V. Kern, Martin G. Smith, Rebecca Sullivan, and Richard E. Owen "Large high-performance fast steering mirrors with FPGA-embedded controls", Proc. SPIE 7466, Advanced Wavefront Control: Methods, Devices, and Applications VII, 74660H (11 August 2009); https://doi.org/10.1117/12.829050

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available