VIGO SYSTEM S.A.

Products

PEMI



2-11 μm PHOTOELECTROMAGNETIC DETECTORS OPTICALLY IMMERSED

Description

The PEMI series detectors operate on the photoelectromagnetic effect in the semiconductors, optically immersed to high refractive index hyperhemispherical (standard) or hemispherical (option) lenses.The devices are typically optimized for the best performance at 10.6 μm.

The detector includes active element based on HgCdTe band gap engineered with selected composition and doping profiles, and miniature permanent magnets to produce a magnetic field.

The PEMI detectors are well suited for heterodyne detection of 10.6 μm radiation. Exhibiting no flicker noise, they can be at the same time used for detection of CW and low frequency modulated radiation in the whole 2 to 11 μm spectral range.

Standard detectors are available in specialized PEM packages (with SMA connectors) with wedged BaF2 windows.

Custom devices such as single elements of various sizes, quadrant cells and multielement arrays, various specialized packages and connectors are available upon request.

 

  • Ambient temperature operation
  • No bias required
  • 2 to 11 µm spectral range
  • Time constant of 1 ns or less
  • No flicker noise
  • Operation from DC to VHF
  • Lightweight, rugged and reliable
  • Convenient to use
  • Low cost
  • Custom design upon request
Parameter
Symbol
Unit
PEMI-10.6
Optimal Wavelenght
λopt
µm
10.6
Detectivity*):
@ λpeak
@ λopt
D*
cm⋅Hz1/2⋅W-1

≥1.0×108
≥5.0×107
Voltage Responsivity
@ λopt
Rv⋅w
V⋅mm⋅W-1
≥0.4
Time Constant
τ
ns
≤1
Resistance
R
Ω
40 to 100
Operating Temperature
T
K
~300
Acceptance Angle, F/#
Φ, -
deg, -
36, 1.62

*) Data Sheet states minimum guaranteed D* values for each detector model. Higher performance detectors can be provided upon request.

Type
Optical Area [mm×mm]
0.025×0.025
0.05×0.05
0.1×0.1
0.2×0.2
0.25×0.25
0.5×0.5
1×1
2×2
3×3
4×4
PEMI-10.6
 
 
    O O X X  
 

x - standard detectors
O - detectors available on request, parameters may vary from these in Data Sheet