INFRARED DETECTOR
MCT photoconductive detector
P3257/P3981/P2750 series
Non-cooled type and TE-cooled type suitable for long, continuous operation
Features
The band gap can be adjusted by controlling the composition
ratio of HgTe and CdTe. Utilizing this fact, various types are
available in different spectral characteristics.
l
Photoconductive element that decreases its resistance
by input of infrared light
l
Custom devices available
Custom devices not listed in this catalog are also
available with different spectral response, active area
size and number of element.
l
Easy-to-use infrared detector modules with preamp
available
Applications
l
Choice of spectral response (up to 12 µm)
l
Radiation thermometer
l
Gas analyzer
l
Infrared spectrophotometer
l
FTIR
l
CO
2
laser monitor
Accessories (Optional)
l
Heatsink for two-stage TE-cooler A3179-01
(Can also be used with P3257-31)
l
Heatsink for three-stage TE-cooler A3179-04
l
Temperature controller C1103-05 (-25 to -75 ˚C)
C1103-07 (20 to -30 ˚C)
l
Preamp
C5185-01 (P3981/P2750 series)
(Preamp for P3257-30/-31 available upon request)
l
Infrared detector modules with preamp
P4631-10 (P3257-31)
P4631
(P3981)
P4631-04 (P2750)
A bsolute m axim um ratings
Therm istor TE -cooler
O perating
S torage
A llowable
power
allowable
tem perature tem perature
current
dissipation
current
Topr
Tstg
(m W )
(A )
(m A )
(°C )
(°C )
-
-
50
1.5
0.2
1.0
50
3
3
6
6
3
-40 to +60
-55 to +60
s
G eneral ratings / Absolute m axim um ratings
D im e nsiona l
outline /
W indow
m a terial *
1
➀
/S e
A ctive
area
Type N o.
Package
C ooling
(m m )
w ith BN C c onnec tor N on-cooled
O n e -s ta g e
TO -8
P 3257-31
➁
/S e
T E -c o o le d
➁
/S
TO -8
P 3981
1 × 1
T w o -s ta g e
TO -66
P 3981-01
➂
/S
T E -c o o le d
➁
/S
TO -8
P 2750-08
T h re e -s ta g e
P 2750
TO -3
➃
/S
T E -c o o le d 0 .2 5 × 0 .2 5
P 2750-06
*1: W indow m aterial S : S apphire glass
S e: ZnS e
P 3257-30
s
E lectrical and optical characteristics (Typ. unless otherw ise noted)
M easure m e nt
P eak
P hoto
condition
C ut-off
sensitivity
sensitivity *
2
wavelength
E le m e n t
wavelength
S
λc
te m p e ra tu re
λp
λ=λp
*
3
T
(°C )
25
0
(µ m )
6.5
7.0
(µ m )
11.0
11.5
(V /W )
2 × 10
-3
5 × 10
-3
D
∗
(500, 1200, 1) *
4
D
∗
(λp *
3
, 1 2 0 0 , 1 )
NEP
λ=λp
*
3
D a rk
R ise tim e
re sis ta n c e
tr
0 to 63 %
Rd
Type N o.
P 3257-30
P 3257-31
P 3981
3.6
4.3
1 × 10
4
5.0 × 10
8
5.0 × 10
9
1.3 × 10
11
-30
P 3981-01
P 2750-08
3.0 × 10
8
3.0 × 10
9
1.5 × 10
10
4.8
5.4
3 × 10
2
3
P 2750
2 × 10
-60
4.8
5.5
1.0 × 10
9
9.0 × 10
9
4.5 × 10
10
3 × 10
3
P 2750-06
*2: P hoto sensitivity changes with the bias current. The values in the above table are m easured
*3: P 3257-30/-31:
λ=10.6
µm
*4: P 3257-30/-31: (800, 1200, 1)
M in.
Typ.
(cm ·H z
1/2
/W ) (cm ·H z
1/2
/W ) (cm ·H z
1/2
/W ) (W /H z
1/2
)
5.0 × 10
5
3.0 × 10
6
2.0 × 10
5
5.0 × 10
-7
6
6.0 × 10
6
5
1.0 × 10
5.0 × 10
2.0 × 10
-7
7.7 × 10
-13
(µ s)
1 (ns)
1 (ns)
10
(Ω )
30
35
600
6.7 × 10
-12
2
160
2.2 × 10
-12
3
200
5.0 × 10
-13
with the optim um bias current.
1
MCT photoconductive detector
s
Spectral response
P3257-30/-31
10
8
(Typ.)
P3257/P3981/P2750 series
P3981/-01
10
12
(Typ.)
D* (λ, 1200, 1) (cm · Hz
2
/W)
P3257-31 (T=0 ˚C)
10
7
D* (λ, 1200, 1) (cm · Hz
1/2
/W)
1
10
11
T= -30 ˚C
P3257-30 (T=25 ˚C)
10
6
10
10
T=0 ˚C
10
5
10
2
3
4
5
6
7
8
9
10
11
12
9
2
3
4
5
WAVELENGTH (µm)
KIRDB0164EC
WAVELENGTH (µm)
KIRDB0066EC
P2750/-06/-08
10
11
s
D* vs. element temperature
(Typ.)
10
11
P3981
(Typ.)
P2750/-06 (T= -60 ˚C)
D* (λ, 1200, 1) (cm · Hz
1/2
/W)
D* (λ, 1200, 1) (cm · Hz
2
/W)
P2750
10
10
10
10
P2750-08 (T= -30 ˚C)
10
9
1
10
9
10
8
2
3
4
5
6
10
8
-80
-60
-40
-20
0
20
40
WAVELENGTH (µm)
KIRDB0068EC
ELEMENT TEMPERATURE (˚C)
KIRDB0174EA
s
S/N vs. bias current (P2750)
10
D*
9
(Typ.)
s
Cooling characteristics of TE-cooler
40
[Typ. Ta=25 ˚C, thermal resistance of heatsink=3 ˚C/W (one and two-stage TE-cooled),
1.2 ˚C/W (three-stage TE-cooled)]
ELEMENT TEMPERATURE (˚C)
8
20
ONE-STAGE
TE-COOLED
TYPE
TWO-STAGE
TE-COOLED
TYPE (TO-8)
RELATIVE VALUE
7
6
5
4
3
N
2
1
0
S
0
-20
-40
TWO-STAGE
TE-COOLED
TYPE (TO-66)
-60
THREE-STAGE
TE-COOLED
TYPE
-80
0
1
2
3
4
5
0
0.4
0.8
1.2
1.6
CURRENT (mA)
KIRDB0070EC
CURRENT (A)
KIRDB0175EA
The detector must be operated in a range
where the D* becomes Max.
2
MCT photoconductive detector
s
Current vs. voltage of TE-cooler
1.6
1.4
[Typ. Ta=25 ˚C, thermal resistance of heatsink=3 ˚C/W (one and two-stage TE-cooler),
1.2 ˚C/W (three-stage TE-cooler)]
P3257/P3981/P2750 series
s
Thermistor temperature characteristic
1 MΩ
(Typ.)
SENSOR RESISTANCE
1.2
ONE-STAGE
TE-COOLED TYPE
CURRENT (A)
100 kΩ
1.0
0.8
0.6
0.4
0.2
0.0
TWO-STAGE
TE-COOLED TYPE
0
0.5
1.0
1.5
2.0
2.5
THREE-STAGE
TE-COOLED TYPE
10 kΩ
1 kΩ
-80
-60
-40
-20
0
20
40
VOLTAGE (V)
KIRDB0176EC
ELEMENT TEMPERATURE (˚C)
KIRDB0071EB
s
Measurement circuit
CHOPPER
1200 Hz
BAND-PASS
FILTER
r.m.s.
METER
DETECTOR
BLACK BODY
500 K
fo=1200 Hz
∆f=120
Hz
INCIDENT ENERGY: 2.64 µW/cm
2
KIRDC0005EA
s
Connection example (P3981)
CABLE (SUPPLIED WITH C5185)
BNC CONNECTOR
CABLE (SOLD SEPARATELY)
P3981
+
A3179-01
DETECTOR &
HEATSINK
POWER SUPPLY FOR AMP
C5185-01
AMP
LOCK-IN AMP OR
SPECTRUM ANALYZER
SIGNAL
PROCESSING
CIRCUIT
C1103-05
TEMPERATURE
CONTROLLER
C4696
CHOPPER
CABLE (SUPPLIED WITH C1103-05)
Connect C1103-05 and power supply ground wires together.
KIRDC0006EB
BNC CONNECTOR
CABLE (SOLD SEPARATELY)
3
MCT photoconductive detector
s
Dimensional outlines (unit: mm)
➀
P3257-30
54.0
20
5
9.0
41.2
1.3
P3257/P3981/P2750 series
➁
P3257-31, P3981, P2750-08
15.3 ± 0.2
14 ± 0.2
11.7
20
KIRDA0121EA
0.45
LEAD
10.2 ± 0.2
12 MIN.
DETECTOR
DETECTOR
TE-COOLER (-)
TE-COOLER (+)
THERMISTOR
P3257-31 P3981, P2750-08
a
5.2 ± 0.2
5.0
PHOTOSENSITIVE
SURFACE
BNC CONNECTOR
PHOTOSENSITIVE
SURFACE
5.1 ± 0.2
a
10 ± 0.2
WINDOW
10 ± 0.2
5.1 ± 0.2
6.6 ± 0.2
KIRDA0122EA
➂
P3981-01
32 MAX.
24.4 ± 0.2
➃
P2750/-06
39 ± 0.2
30.1 ± 0.1
17 ± 0.4
3.7
WINDOW
10 ± 0.1
PHOTOSENSITIVE
SURFACE
14 ± 0.1
4
11 ± 0.5
5.1 ± 0.2
19.4 ± 0.2
5.0 ± 0.2
25.4 ± 0.2
PHOTOSENSITIVE WINDOW
10 ± 0.2
SURFACE
1.6 ± 0.1
9±1
25 MAX.
3.5 MAX.
9 ± 0.2
PUMP-OUT PIPE
PUMP-OUT PIPE
5 MAX.
12.7 ± 0.2
40˚
36˚
40˚
KIRDA0123EB
40˚
40˚
THERMISTOR
DETECTOR
DETECTOR
TE-COOLER (-)
TE-COOLER (+)
25 MAX.
1.0
LEAD
12 ± 1
2.0
11.6 ± 0.2
TE-COOLER (+)
DETECTOR
THERMISTOR
PUMP-OUT PIPE
NC
TE-COOLER (-)
40˚
KIRDA0045ED
Information furnished by HAMAMATSU is believed to be reliable. However, no responsibility is assumed for possible inaccuracies or omissions.
Specifications are subject to change without notice. No patent rights are granted to any of the circuits described herein. ©2007 Hamamatsu Photonics K.K.
HAMAMATSU PHOTONICS K.K., Solid State Division
1126-1 Ichino-cho, Higashi-ku, Hamamatsu City, 435-8558 Japan, Telephone: (81) 53-434-3311, Fax: (81) 53-434-5184, www.hamamatsu.com
U.S.A.: Hamamatsu Corporation: 360 Foothill Road, P.O.Box 6910, Bridgewater, N.J. 08807-0910, U.S.A., Telephone: (1) 908-231-0960, Fax: (1) 908-231-1218
Germany: Hamamatsu Photonics Deutschland GmbH: Arzbergerstr. 10, D-82211 Herrsching am Ammersee, Germany, Telephone: (49) 08152-3750, Fax: (49) 08152-2658
France: Hamamatsu Photonics France S.A.R.L.: 19, Rue du Saule Trapu, Parc du Moulin de Massy, 91882 Massy Cedex, France, Telephone: 33-(1) 69 53 71 00, Fax: 33-(1) 69 53 71 10
United Kingdom: Hamamatsu Photonics UK Limited: 2 Howard Court, 10 Tewin Road, Welwyn Garden City, Hertfordshire AL7 1BW, United Kingdom, Telephone: (44) 1707-294888, Fax: (44) 1707-325777
North Europe: Hamamatsu Photonics Norden AB: Smidesvägen 12, SE-171 41 Solna, Sweden, Telephone: (46) 8-509-031-00, Fax: (46) 8-509-031-01
Italy: Hamamatsu Photonics Italia S.R.L.: Strada della Moia, 1/E, 20020 Arese, (Milano), Italy, Telephone: (39) 02-935-81-733, Fax: (39) 02-935-81-741
Cat. No. KIRD1025E09
Jul. 2007 DN
4
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