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Proceedings Paper

HALOS: fast compact, autonomous adaptive optics for UAVs
Author(s): G. Andersen; P. Gelsinger-Austin; F. Ghebremichael; P. Gaddipati; Ravi Gaddipati
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Paper Abstract

We present an adaptive optics system which uses a multiplexed hologram to deconvolve the phase aberrations in an input beam. The wavefront characterization is extremely fast as it is based on simple measurements of the intensity of focal spots and does not require any complex calculations. Furthermore, the system does not require a computer in the loop and is thus much cheaper, more compact and more robust as well. A fully functional, closed-loop prototype incorporating a 32-element MEMS mirror has been constructed. The unit has a footprint no larger than a laptop but runs at bandwidths over an order of magnitude faster than comparable, conventional systems occupying a significantly larger volume. Additionally, since the sensing is based on parallel, all-optical processing, the speed is independent of actuator number – running at the same bandwidth for one actuator as for a million.

Paper Details

Date Published: 3 June 2014
PDF: 8 pages
Proc. SPIE 9084, Unmanned Systems Technology XVI, 90840Z (3 June 2014); doi: 10.1117/12.2050565
Show Author Affiliations
G. Andersen, Hua, Inc. (United States)
P. Gelsinger-Austin, Hua, Inc. (United States)
F. Ghebremichael, Hua, Inc. (United States)
P. Gaddipati, Hua, Inc. (United States)
Ravi Gaddipati, Hua, Inc. (United States)

Published in SPIE Proceedings Vol. 9084:
Unmanned Systems Technology XVI
Robert E. Karlsen; Douglas W. Gage; Charles M. Shoemaker; Grant R. Gerhart, Editor(s)

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