INFRARED DETECTOR
Photon drag detector
B749
High-speed detector with high sensitivity in the 10 µm band (for CO
2
laser detection)
B749 is a photon drag detector that utilizes the photon drag effect in which carriers created by input photons are dragged in the direction of
photons, generating an electromotive force. B749 ensures high-speed operation even at room temperatures and has high sensitivity in the 10 µm
band, making it well suited to detection of CO
2
lasers. An easy-to-use detector module integrated with a preamplifier (B7506-01) is also available.
Features
Applications
l
Room temperature operation with high-speed response
l
Easy-to-use detector module with amplifier (B7506-01)
is available
l
CO
2
laser detection
ACCESSORIES (Optional)
l
Magnet stand
l
Infrared detector module with preamp
I
General ratings
Parameter
Active area
Output polarity
Specification
f5
Positive
A1447
B7506-01
Unit
mm
-
I
Absolute maximum ratings
Parameter
Operating temperature
Storage temperature
Symbol
Topr
Tstg
Value
0 to +60
0 to +60
Unit
°C
°C
I
Electrical and optical characteristics (T=25
°C)
Parameter
Photo sensitivity
Rise time
Noise equivalent power
Output impedance
Maximum input light level
Symbol
S
tr
NEP
-
-
Condition
l=10.6
µm
10 to 90 %
l=10.6
µm
Min.
-
-
-
-
-
Typ.
1.2
-
4 × 10
-3
50
1
Max.
-
1
-
-
-
Unit
mV/kW
ns
W/Hz
1/2
W
J/cm
2
HAMAMATSU [ HAMAMATSU CORPORATION ]
