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Measurement, Instrumentation, and Sensors Handbook, Second Edition, 2nd Edition
book

Measurement, Instrumentation, and Sensors Handbook, Second Edition, 2nd Edition

by John G. Webster, Halit Eren
February 2014
Intermediate to advanced content levelIntermediate to advanced
1921 pages
82h 13m
English
CRC Press
Content preview from Measurement, Instrumentation, and Sensors Handbook, Second Edition, 2nd Edition
44-11Photojunction Sensors
e expression for the total current under illumination of an APD contains an additional term for the
ga
in,
M
,
a
s
d
escribed
i
n
t
he
f
ollowing
e
quation:
I M I I M I
o db ds p
= + + (44.11)
where
I
db
is the bulk dark current
I
ds
is the surface dark current, which can include ohmic components
For
sim
plicity,
al
l
of th
e
da
rk
bu
lk
cu
rrent
is as
sumed
to ex
perience
mu
ltiplication
in Eq
uation
44.11.
Al
though
th
ere
co
uld
be ga
in
as
sociated
wi
th
th
e
su
rface
co
mponents,
th
e
ga
in
sh
ould
be sm
all,
or ne
g-
ligible,
i
n
a
n
i
deal
d
evice
.
44
.5.3.2
Qu
antum Efficiency
e
f
undamental
e
xpression
f
or
t
he
Q
E
o
f
a p
hotodiode
[
2]
a
pplies
to t
he ...
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Publisher Resources

ISBN: 9781439848913