InGaAs Photodiode Line Arrays

The new performance standard in NIR spectroscopy

The highly sensitive InGaAs line sensors with 256, 512 or 1,024 pixels from Polytec’s partner Sensors Unlimited are available with upper limit wavelengths of between 1.45 µm and 2.6 µm. New manufacturing processes give rise to top results in NIR absorption spectroscopy or Raman measurements due to further reduced dark current and improved homogeneity.

You can choose between two readout variants: “integrate then read” with the LBD / LE array or “integrate while read” with the the LC array. The LC version in particular, with its four programmable gain options, is perfect for integration in fast vision systems and high-resolution spectrometers.

Properties

  • Limit wavelength:
    – RDC (reduced dark current) 1.45 µm 
    – Standard 1.7 µm
    – Extended  2.2 µm
    – Full range (LC version only) 2.6 µm
  • Array length: 256, 512 or 1,024 pixels
  • High full-well capacity: 130 or 250 Me 
  • Pitch: 25 µm or 50 µm
  • Aperture (diode height). 250 µm or 500 µm
  • Kovlar™ hermetic package
  • TEC-free or with an integrated one, two or three-stage TE cooler 
LC Series LSC Series LE Series LDB Series
The high-sensitivity LC-series linear InGaAs photodiode arrays are designed for broad wavelength range, multichannel spectrometer designs. The SU1024LE-1.7 is available in machine vision and spectroscopy formats, the high-resolution LE-series linear InGaAs photodiode arrays have set the standard for high performance. The Sensors Unlimited LSB Series arrays are widely used for optical performance monitoring of S, C & L band channels in DWDM networks.
  • Autozero reduction of pixel variation & dark current
  • Wavelength range of 1.0 μm to 2.6 μm
  • Line rates up to 18.9 klps with 1 ADC and 5 MHz clock in Autozero mode
  • Full Well capacity options from 1.25 to 250 M-electrons
  • Antiblooming protection
  • Serial input for mode control
  • Integrate-while-read for minimum overhead
  • Room temperature stabilized
  • Reduced fixed pattern noise
  • ESD resistant
  • Easy to use
  • Large collection area for spectroscopy
  • Square pixel for machine vision
  • Antibloomimg
  • Optional pixel hights
  • Room temperature stabilized
  • ESD resistant
  • Easy to use
  • Antiblooming
  • 25 μm pitch
  • Operating wavelength range
    0.8 μm–1.7 μm or 1.0 to 2.2 μm
  • 100 KHz to 1.25 MHz clock rate
  • 2.5 MPix/sec composite readout rate
  • Selectable full-well capacity of 5 or 130 million electrons
  • 25 μm pitch
  • Operating wavelength range
    0.8 μm–1.7 μm or 1.0 to 2.2 μm
  • 100 KHz to 1.25 MHz clock rate
  • 2.5 MPix/sec composite readout rate
  • Selectable full-well capacity of 5 or 130 million electrons