Geiger-mode quad-cell array for adaptive optics
May 7, 2008
Conference Paper
Author:
Published in:
CLEO-QELS, 2008 Conf. on Lasers and Electro-Optics/Quantum Electronics and Laser Science Conf., 4-9 May 2008.
R&D Area:
R&D Group:
Summary
We report an array of Shack-Hartmann wavefront sensors using high-fill-factor Geiger-mode avalanche detector quad cells hybridized to all-digital CMOS counting circuits. The absence of readout noise facilitates fast wavefront sensing at low light levels.