Copyright © Philip M. Parker, INSEAD. Terms of Use.
| Domain | Definition |
Electrical Engineering | A semiconductor photo-sensitive diode in which the onset of avalanche breakdown is caused by the generation of charge carriers in a reverse-biased junction. Source: European Union. (references) |
Source: compiled by the editor from various references; see credits. | |
(From Wikipedia, the free Encyclopedia)
Avalanche photodiodes (APDs) are photodetectors that can be regarded as the semiconductor analog to photomultipliers. By applying a high reverse bias voltage, APDs show an internal gain effect due to impact ionization. The higher the reverse voltage the higher the gain. Avalanche photodiodes therefore are more sensitive compared to other semiconductor photodiodes.
If very high gain is needed (105 to 106) an reverse voltage above the APDs breakdown voltage can be applied if the current is limiteted to below the APDs latching current (Geiger mode). This is in particular useful for single photon detection.
A typical application for APDs are laser range finders.
Also APD arrays are commerical available.
see also: avalanche diode
Source: adapted by the editor from Wikipedia, the free encyclopedia under a copyleft GNU Free Documentation License (GFDL) from the article "Avalanche photodiode."
| Domain | Title |
Books | |
Source: compiled by the editor from various references; see credits. | |
| The following statistics estimate the number of searches per day across the major English-language search engines as identified by various trade publications. Hyperlinks lead to commercial use of the expression at Amazon.com. |
| Expression | Frequency per Day |
avalanche photodiode | 8 |
| Source: compiled by the editor from various references; see credits. | |
Hexadecimal (or equivalents, 770AD-1900s) (references)41 56 41 4C 41 4E 43 48 45 50 48 4F 54 4F 44 49 4F 44 45 |
| Leonardo da Vinci (1452-1519; backwards) (references)
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Binary Code (1918-1938, probably earlier) (references)01000001 01010110 01000001 01001100 01000001 01001110 01000011 01001000 01000101 00100000 01010000 01001000 01001111 01010100 01001111 01000100 01001001 01001111 01000100 01000101 |
HTML Code (1990) (references)A V A L A N C H E   P H O T O D I O D E |
ISO 10646 (1991-1993) (references)0041 0056 0041 004C 0041 004E 0043 0048 0045 0050 0048 004F 0054 004F 0044 0049 004F 0044 0045 |
Encryption (beginner's substitution cypher): (references)355635463548374239250424954493843493839 |
| 1. Synonyms 2. Usage: Commercial 3. Expressions: Internet 4. Orthography | 5. Bibliography |
Copyright © Philip M. Parker, INSEAD. Terms of Use.
