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NASA NTRS · 20060028639

Optical path control in the MAM testbed

Regehr, M. W.·Hines, B.·Holmes, B.
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Abstract

The Micro-Arcsecond Metrology (MAM) experiment is one of a family of ground-based testbeds that will demonstrate critical technologies for SIM, the Space Interferometry Mission.

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optical interferometers optical path MAM testbed Micro-Arcsecond Metrology

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Regehr, M. W., Hines, B., Holmes, B.. 2003-03-08. Optical path control in the MAM testbed. https://ntrs.nasa.gov/citations/20060028639

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NASA NTRS2003

Optical path control in the MAM testbed

Future space-based optical interferometers will require control of the optical path delay to accomplish some or all of the three objectives: balancing the optical path in the two arms to within a tolerance corresponding to the coherence length of the star light being observed, modulating the optical path in order to observe the phase of the star light interference fringe, and modulating the path length in order to reduce the effect of cyclic errors in the laser metrology system used to measure the optical path length in the two arms of the interferometer.

optical interferometers optical path MAM testbed M↗