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Tel
203•377•8282 Fax 203•378•2457 E-Mail res_sales@oriel.com URL www.oriel.com
HgCdZnTe DETECTORS
nBroad spectral response 2 to 12 µm and
beyond
nDC to subnanosecond operation
nNo flicker noise down to 0 Hz in photovoltaic
mode
nMonolithic optical immersion
nRoom temperature and TE cooled operation
Our Mercury Cadmium Zinc Telluride Detectors
(HgCdZnTe) cover a broad spectral range, 2 to 12 µm, and
have excellent detectivity. Fig. 1 shows typical curves. They
are excellent for infrared laser characterization and
stabilization, for heterodyne detection, FT-IR, fast pyrometry,
and radiometry.
Optical immersion is a classical way to make a
physically small detector (lower noise, lower bias
requirements, lower bias current heating, etc.) look optically
larger for more sensitivity. It is particularly easy to do with
the monolithic manufacturing technique of our detectors,
see Fig. 2. Our proprietary technique ensures a perfect
optical match between lens and detector. We have
removed the transmission limits normally set by bonding
adhesives.
PHOTOVOLTAIC OPERATION
Photovoltaic operation is preferred for lower frequency
applications, to avoid the bias current created 1/f noise. It
also allows highest frequency operation, down to the 100 ps
level. Response time in the photovoltaic mode is only
limited by the carrier diffusion time through the very thin
HgCdTe layer. Two forms of photovoltaic products are
available: the magnetically (PEM) assisted ones and the
photodiffusion (PD) effect assisted ones.
The PD variety is now available even in TE cooled
versions for optimum performance throughout the
frequency spectrum.
70777 HgCdZnTe Detector.
Fig. 2 Schematic of optically immersed HgCdZnTe Detectors.
Fig. 1 Typical detectivities of HgCdZnTe Detectors.
TECHNOTE
PD type detectors offer high speed response, ideal for
applications involving short pulse lasers. Occassionally
these detectors exhibit responsivity curves with both
positive and negative wavelength response regions. We
can select spectrally well balanced units for you, if you
let us know that your application covers more than a
single laser wavelength.
HgCdZnTe DETECTORS
Contact us for further information on any of the products in this catalog
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* Common specifications: Field of View is 40°, Detector Type is PD, Package Type is A, Operating temperature is 240 K, typical.
GENERAL LIMITS AND PRECAUTIONS
1.CW irradiance must not exceed 20 W cm-2for the
optically immersed detectors and 100 W cm-2for the
non-immersed detectors.
2.Pulses shorter than 1 µs must not exceed 10 kW cm-2
for the optically immersed detectors and 1 MW cm-2
for non-immersed detectors.
3.Avoid overbiasing of the detectors.
4.Avoid overdriving and reversing voltage connections
on the TE coolers.
Fig. 3 Dimensional diagram of HgCdZnTe Detectors and their mounts.
SPECIFICATIONS AND ORDERING INFORMATION
Room Temperature Detectors
Typical
Responsivity (V/W)Typical
D* (cm H
2
1/2W-1
)Max. Signal (V)
Useful
Wavelength
Range
(µm)
Optimization
Wavelength
(µm)@ Peak
λ@ 10.6 µm @ Peak
λ@10.6 µm <1 µsCW
2 - 4BaF
24>1000NA>1 x 10
11NA0.050.05
2 - 5BaF
25> 900NA>5 x 10
10NA0.050.05
2 - 6BaF
26> 500NA>3 x 10
10NA0.050.05
2 - 9BaF
29> 50>3>2 x 10
9>4 x 10
70.050.05
2 - 12BaF
212> 10>5>1 x 10
9>2 x 10
80.050.05
2 - 12No Window10.6> 2>0.3>2 x 10
8>3 x 10
7>0.1>0.1
2 - 12Ge, AR coated @ 10.6 µm10.6> 0.5>0.1>5 x 10
7>1 x 10
7>0.1>0.03
2 - 12Ge, AR coated @ 10.6 µm10.6> 0.1>0.02>1 x 10
7>2 x 10
6>0.4>0.006
2 - 12No Window10.6> 0.1>0.02>1 x 10
7>2 x 10
6>1>0.015
Window
Material
Optically Immersed TECooled Photovoltaic Detectors*
Window
Material
Optimization
Wavelength
(µm)D* @ Peak
λRisetime
(ns)Model
No.Price
($)
2 - 4BaF
24>1 x 10
11<25070877$ 1,831.00
2 - 5BaF
25>5 x 10
10<20070878$ 1,831.00
2 - 6BaF
26>3 x 10
10< 8070879$ 2,192.00
2 - 8BaF
28>2 x 10
9< 1070880$ 3,109.00
2 - 12BaF
210.6>2 x 10
9< 370881$ 3,180.00
Useful
Wavelength
Range
(µm)
TECH NOTE
Dimensions in inches (mm)
COMMON SPECIFICATIONS
Active area:1 x 1 mm*
Bias (mA):1-25 for TE cooled detectors; 20-100
for 70785. Optimum bias level
supplied with each detector shipped
Impedance (
Ω):30-400, data supplied with each
detector; longer wavelength
detectors are typically characterized
by lower impedance
TE cooler current:1 A typical
* Detector sizes from 0.05 x 0.05 mm to 4 x 4 mm can also be
provided. Contact Oriel for pricing and other details.
Tel 203•377•8282 Fax 203•378•2457 E-Mail res_sales@oriel.com URL www.oriel.com
6-79
$ 823.00
$ 2,067.00
$ 2,295.00
$ 2,080.00
$ 3,087.00
$ 2,801.00
70785BNCENoPC>60Room Temp.<170783SMADNoPEM>60Room Temp.0.2, typical70782SMACYesPEM>40Room Temp.<170777BNCBYesPD>40Room Temp.<170762TO-8AYesPC>40TE (240 K)<1070759TO-8AYesPC>40TE (240 K)<3070756TO-8AYesPC>40TE (240 K)<10070755TO-8AYesPC>40TE (240 K)<100070754TO-8AYesPC>40TE (240 K)<3000
Model
No.
Output
Connection
Package
Type
(See Figs.
above)
Optically
Immersed
Detector
Type*
Field of
View
(degrees)
Cooling
(Typical Operating
Temp.)
Risetime
(ns)
$ 1,995.00
$ 1,661.00
$ 1,468.00
Price
($)
FOR OEM BUYERS...
Significant price discounts and custom requirement
accommodations for OEM or multiple unit customers is
offered. Call us for information and a quotation for
different packaging, element sizes, wavelength optimi-
zation, higher detectivities, faster response times, as well
as extra cooling stages, small arrays, and custom
electronics.
79535Detector Mount for Packages.........................$89.00
B, C, D and E
700166 ft. (1.8 m) Long BNC to BNC Cable............$28.00
700326 ft. (1.8 m) Long SMA to BNC Cable............$50.00
700416 ft. (1.8 m) Long SMA to SMA Cable............$50.00
70703±15 VDC Power Supply, 110 V......................$297.00
70709±15 VDC Power Supply, 220 V......................$297.00
70716High Gain Voltage Amplifier...........................$565.00
70717High Gain Voltage Amplifier...........................$662.00
with bias option
77057TE Cooler Controller, 110 V...........................$1,125.00
77058TE Cooler Controller, 220 V...........................$1,125.00
* PC = Photoconductive PD = Photovoltaic (Photo diffusion effect assisted) PEM = Photovoltaic (Magnetically assisted)
Accessories
