Title :
Geiger-mode quad-cell array for adaptive optics
Author :
Aull, Brian F. ; Renzi, Matthew J. ; Loomis, Andrew H. ; Young, Douglas J. ; Felton, Bradley J. ; Lind, Thomas A. ; Craig, David M. ; Johnson, Robert L.
Author_Institution :
Lincoln Lab., Massachusetts Inst. of Technol., Lexington, MA
Abstract :
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.
Keywords :
CMOS digital integrated circuits; adaptive optics; avalanche photodiodes; photodetectors; wavefront sensors; Geiger-mode quad cells; Geiger-mode quad-cell array; Shack-Hartmann sensors; adaptive optics; all-digital CMOS counting circuits; avalanche detector; avalanche photodiodes; high-fill-factor detector; wavefront sensor array; Adaptive arrays; Adaptive optics; Circuit noise; Counting circuits; Detectors; Optical arrays; Optical distortion; Optical noise; Optical sensors; Sensor arrays; (040.1345) Avalanche photodiodes (APDs); (110.1080) Active or adaptive optics;
Conference_Titel :
Lasers and Electro-Optics, 2008 and 2008 Conference on Quantum Electronics and Laser Science. CLEO/QELS 2008. Conference on
Conference_Location :
San Jose, CA
Print_ISBN :
978-1-55752-859-9
