CTDs Array detectors

While PMT detectors are more sensitive and operate with lower signal-to-noise than CID or CCD detectors, they cannot match the multichannel capacity of the CTD array detectors. The references by Hamly and Fields, Sweedier et al., Epperson et al. and Pilon et al. can provide more detail on CID and CCD detectors. 

The problems stated above are overcome in US-A-3808435 by a.c. coupling detector signals of an infrared detector array to a CTD array. The detector array and the CTD array... 

The problems mentioned above are overcome in US-A-3808435 by a.c. coupling detector signals of an infrared detector array to a CTD array. The detector array and the CTD array are formed in an HgCdTe chip and a silicon chip respectively and are connected by placing the chips on top of each other with intermediate conductor elements. This technique of connecting two chips is generally called the flip-chip technique. 

CTDs (charge-transfer devices), 1%. 198.204. See alsu Array detectors Curie point. 202,451,895 Current... 

A spectrograph is similar in construction to the two monochromators shown in Figure 7-18 except that the slit arrangement is replaced with a large aperture that holds a detector or transducer that is continuously exposed to the entire spectrum of dispersed radiation. Historically, the detector was a photographic film or plate. Currently, however, diode arrays or CTDs are often used as transducers in spectrographs. 

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