Mar 19, 2009 14:54
15 yrs ago
English term
dark current
GBK
English to Danish
Science
Physics
Definition from
Tyco Electronics Corporation:
The thermally induced current that exists in a photodiode in the absence of incident optical power.
Example sentences:
This voltage may be as low as 10 mV or as high as 50 V and the dark currents may vary from pA to μA depending upon the junction area and the process used. Dark current is always specified at a particular value of reverse applied voltage. (optoelectronics.perkinelmer.com)
The photodiode noise in is the sum of the thermal noise (or Johnson noise) ij of a resistor which approximates the shunt resistance and the shot noise isD and isL resulting from the dark current and the photocurrent. (Hamamatsu Corporation)
Dark current is dependent on temperature. While dark current may initially be low, it will increase as the device temperature increases. (tpub.com)
Change log
Mar 19, 2009 14:39: changed "Kudoz queue" from "In queue" to "Public"
Mar 19, 2009 14:54: changed "Stage" from "Preparation" to "Submission"
Mar 22, 2009 15:55: changed "Stage" from "Submission" to "Selection"