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SM301/SM301-EX PbS/PbSe Array Spectrometer article

SM301/SM301-EX PbS/PbSe array spectrometer

  • Low Noise 
  • Cooled, Stable Operation
  • 256 Detection Elements
  • Accommodates spectral measurements in the 1.0 to 3.0 micron (PbS) or 1.5 to 5.0 micron (PbSe) region
  • Optical input direct to slit or via fiber 
The Choice for MIR Spectral Applications

The SM301/SM301-EX is a versatile, high performance PbS/PbSe array spectrometer. Its active components include a TE cooler and a 256-element PbS/PbSe detector element array. Operation of the unit for research applications is easy with the included SM32Pro - Windows based analysis software. The system is ideal for spectroscopic applications in the 1.0 to 3.0 micron (PbS) or 1.5 to 5.0 micron (PbSe) region.

The SM301/SM301-EX includes thermoelectric cooling to guarantee long-term operational stability. The SM301/SM301-EX employs a multiplexed PbS/PbSe array as its NIR detection element. The array is cooled and temperature stabilized at around -4oC which ensures long-term operation stability. Dark signal can thus be automatically measured by the built-in electronics periodically and subtracted automatically. Compared with conventional scanning NIR spectrometers the SM301/SM301-EX provides the multi-channel detection advantage, both in reducing the measurement time and enhancing measurement signal-to-noise ratio. The SM301/SM301-EX can operate at a readout rate of 2MHz or faster allowing fast measurement and averaging operation to be performed in a short period of time.


  • SM32Pro - Windows® 98, 2000, XP, 7 based software (supporting 32bit & 64bit) for data acquisition and analysis
  • Transmission, reflectance and absorbance measurements
  • Data export, zoom in and out, spectrum overlays and many more features
  • Signal average and integration time control
  • SDK and DLLs abailable for easy custom software development

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