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EOS offers a complete line of detectors for the LWIR spectral range including photovoltaic and photoconductive
HgCdTe, and specialized pyroelectric and thermopile detectors. The HgCdTe material system can be tailored
for peak wavelength response throughout the LWIR region by proper selection of the starting alloy composition,
giving the user the ability to optimize the sensitivity and wavelength specifications for a given application. Listed
below are standard configurations, which are supplemented by custom configurations such as rectangular
elements, multi-element arrays, quadrant detectors, special cooling systems (Joule-Thomson, closed cycle
Stirling, and multi-stage thermoelectric coolers) and two color sandwich detectors. Consult the factory about
these and other custom design concerns.
Photodiodes:
These detectors offer the following advantages: 1) High speed (up to 200MHz) operations is possible with small
area detectors and suitable high-speed circuitry. 2) DC operation is simple, as zero bias is the usual operating
mode. 3) Virtual lack of 1/f noise affords good noise characteristics to down to low frequencies. 4) Photovoltaic
operation provides good linearity at higher power levels
Material Part # Active
Dia
(mm)
Operating
Wavelength
(µm)
Operating
Temp (K) Responsivity at
λp (A/W) (typ)
Shunt
Resistance
(Ω)
(typ)
Shunt
Capacitance
(pF)
(typ)
D* at λp,
1000Hz
(cm. Hz½/W)
(min)
Package
PVMCT10-001 0.1 2 – 11 4.0 @ 10.6 µm1k 25 2.0 x 1010
PVMCT10-003 0.3 2 – 11 4.0 @ 10.6 µm300 40 2.0 x 1010
PVMCT10-010 1.0 2 – 11 4.0 @ 10.6 µm50 250 2.0 x 1010
HgCdTe
PVMCT14-010 1.0 2 – 14
77 K
3.5 @ 13.0 µm30 250 1.5 x 1010
LN-
Series
Dewar
Photoconductors:
These detectors offer the maximum sensitivity in the medium frequency range of approximately 1kHz to 300kHz.
Their background limited performance takes full advantage of cold apertures and cold filters in maximizing D*.
They also have excellent long term stability.
Material Part Number Active
Size
(mm)
Operating
Wavelength
(µm)
Operating
Temp (K) Responsivity at
λp (V/W) (typ)
Dark
Resistance
(Ω)
(typ)
Time
Constant
(µs)
D* at λp,
1000Hz
(cm. Hz½/W)
(min)
Package
MCT10-010/TE2 2 – 10.6 243 0.1 @ 10.6 µm
1.0 @ 8.0 µm20 – 30 .005 2.0 x 107@ 10.6
1.0x 108 @ 8.0 TO-8
T5
MCT10-010/TE3 1.0 2 - 11 223 0.5 @ 10.6 µm
5.0 @ 8.0 µm20 - 30 .010 1.8x 108 @ 10.6
1.0x 109 @ 8.0 T5
MCT10-XXX 2 – 12 200 - 10000 @ 11µm50 – 100 0.3 – 0.6 4.0 x 1010
MCT14-XXX
0.10,
0.25,
0.50, 1.0,
2.0, 3.0 2 – 15 200 - 10000 @ 14µm20 – 50 0.2 – 0.5 3.0 x 1010
MCT16-XXX 2 – 17 100 - 5000 @ 15µm20 – 30 0.2 – 0.5 1.5 x 1010
HgCdTe
MCT20-XXX
0.25,
0.50,
1.0 2 – 20
77K
100-1000 @ 18µm20 - 30 0.2 – 0.5 5.0 x 109
LN-
Series
Dewar
Thermal Detectors:
These devices offer moderate sensitivity, simple ambient temperature operation, and can be combined with all EOS
electronic options.
Material Part Number Active
Size
(mm)
Operating
Wavelength
(µm)
Operating
Temp (K) Responsivity at
λp (µA/W) (typ)
Dark
Resistance
(Ω)
(typ)
Time
Constant
D* at λp,
1000Hz
(cm. Hz½/W)
(min)
Package
LT-020 2.0 1.0 >1012/30pF 100 ms 3 x 108
Pyroelectric
(LTO) LT-025LD 2.5 2 - 20 295 0.3 >1012/30pF 2 ns,RL=50Ω1 x 108TO, BNC
Thermopile TP-020 2.0 2 - 20 295 10.0 5k 50 ms 2 x 108TO, BNC
