منابع مشابه
Photon counting arrays for AO wavefront sensors
Future wavefront sensors for AO on large telescopes will require a large number of pixels and must operate at high frame rates. Unfortunately for CCDs, there is a readout noise penalty for operating faster, and this noise can add up rather quickly when considering the number of pixels required for the extended shape of a sodium laser guide star observed with a large telescope. Imaging photon co...
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We report a new time-resolved optical measurement method which combines single photon counting and the spread spectrum time-resolved optical measurement method. A laser diode modulated with pseudo-random bit sequences replaces the short pulse laser used in conventional time-resolved optical systems, while a single photon detector records the pulse sequence in response to the modulated excitatio...
متن کاملSuperconducting Nanowire Photon-Counting Detectors for Optical Communications
Photon-counting detectors can be used in optical communications links to provide a large enhancement in receiver sensitivity over conventional photodetectors at near-infrared wavelengths (1.3–1.55 microns) [1]. However, the highest data rate that has been demonstrated to date using these techniques is about 100 kbits/sec for a receiver consisting of a single InGaAs avalanche photodiode (APD), w...
متن کاملSuperconducting Nanowire Photon-Counting Detectors for Optical Communications
Photon-counting detectors can be used in optical communications links to provide a large enhancement in receiver sensitivity over conventional photodetectors at near-infrared wavelengths (1.3–1.55 microns) [1]. However, the highest data rate that has been demonstrated to date using these techniques is about 100 kbits/sec for a receiver consisting of a single InGaAs avalanche photodiode (APD), w...
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ژورنال
عنوان ژورنال: Journal of the Illuminating Engineering Institute of Japan
سال: 1994
ISSN: 0019-2341,1349-838X,2185-1506
DOI: 10.2150/jieij1980.78.3_100