P2748_07 Datasheet, PDF (1/4 Pages) Hamamatsu Corporation – MCT photoconductive detector

INFRARED DETECTOR
MCT photoconductive detector
P2748/P5274 series, P3257-50
Dewar type detector with high sensitivity and high-speed response in long wavelength range
Features
Applications
l Choice of spectral response range (up to 25 µm)
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 Micro-cooled type available
l FTIR
l Infrared spectrophotometer
l Thermal imaging
l Remote sensing
l CO2 laser detection
This type of cooling does not require pour-filled liquid
nitrogen.
l Custom devices available
l _{Custom devices not listed in this catalog are also available}
l with different spectral response, active area sizes and
Accessories (Optional)
Valve operator
A3515
Amplifiers for dewar type MCT photoconductive detector
number of elements.
l Glass dewar type not requiring repumping is also provided. Infrared detector module with preamp
C5185
P7752-10
s General rating / Absolute maximum ratings
Type No.
P2748-40
P2748-41
Dimensional
outline/
Window
material *¹
Package
➀/Z ^{Side-on type metal dewar}
➁/Z ^{Head-on type metal dewar}
Cooling
Nitrogen
Active area
maintenance
time
Min.
(mm)
(h)
1×1
1×1
P2748-42
P5274
P5274-01
P3257-50
➀/Z _{Side-on type metal dewar}
LN2
0.25 × 0.25
1×1
12
➀/K
1×1
➂/Z Stirling type metal Micro-cooled 1 × 1
-
Absolute maximum ratings
Allowable Operating Storage
current temperature temperature
Topr
Tstg
(mA)
(°C)
(°C)
40
40
20
-40 to +60 -55 to +60
40
20
40
-40 to +55 -45 to +55
s Electrical and optical characteristics (Typ. unless otherwise noted)
Type No.
Measurement
condition
Element
temperature
T
Peak
sensitivity
wavelength
λp
Cut-off
wavelength
λc
Photo
sensitivity
S
λ=λp
*²
D^∗
(500, 1200, 1)
D^∗
(λp, 1200, 1)
NEP
λ=λp
Rise _Dark
time
tr
0 to 63 %
resistance
Rd
(°C) (µm) (µm)
Min.
Typ.
(V/W) ^{(c m· Hz1/2/W) (c m· Hz1/2/W) (c m· Hz1/2/ W)} (W/Hz^1/2) (µs)
(Ω)
P2748-40
1000
2.5 × 10^-12
P2748-41
12
14
1000
1 × 10¹⁰ 2 × 10¹⁰ 4.0 × 10¹⁰ 2.5 × 10^-12 0.6
40
P2748-42
P5274
-196
14
17
10000
6.3 × 10^-12
500
2 × 10⁹ 1 × 10¹⁰ 1.5 × 10¹⁰ 6.7 × 10^-12 0.6
30
P5274-01
17
22
250
1 × 10⁹ 5 × 10⁹ 1.0 × 10¹⁰ 1.0 × 10^-11 0.4
100
P3257-50
12
14
1000
1 × 10¹⁰ 2 × 10¹⁰ 4.0 × 10¹⁰ 2.5 × 10^-12 0.6
40
*1: Window material K: KRS-5, Z: ZnSe
*2: Photo sensitivity changes with the bias current. The values in the above table are measured with the optimum bias current.
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