Lexsyg Smart TL / OSL Reader

"The most sensitive TL/OSL reader"


  • Luminescence Dating
  • Material Research
  • Authenticity Testing
  • Accident Dosimetry
  • Radiation Protection
  • Food Irradiation
  • Solid State Dosimetry
  • Bioluminescence

 Looking for Quality Assurance? The Lexsyg Smart addresses standards EN 1788 and EN 13751:2009 related to irradiated food testing.

The December 2023 Issue of Ancient TL (Volume 41, Issue 2) - Click here

Freiberg Researchers Open Joint Laboratory for Luminescence Research - Click here to read more!

Check out relevant work using Lexsyg Research & Lexsyg Smart: Click here

Thermal Stimulation

Ceramic heating element allows highly reliable and more consistent measurements. The heating element is cooled by continuous flow of nitrogen or compressed air.

Thermoluminescence (TL), preheat (PH) including elevated temperature luminescence measurements (OSL, RL, etc.) as well as elevated temperature irradiation (at ionizing irradiation and “solar-light” position)  are possible during any part of a heating/cooling  cycle,  which is almost freely programmable including non-linear heating/cooling functions.

    • Heating rate: 0.1 - 20.0 °C/s (@Tmax= up to 710°C)
    • Highly flexible step-wise programming of heating / cooling cycles within system parameters (i.e. temperature and heating/cooling rates)
    • Software options for further temperature control (e.g. non-linear functions)

    Optical Stimulation (OSL)

    All Lexsyg Smart and Lexsyg Research TL/OSL readers can be equipped with an interchangeable OSL unit containing up to three stimulation wavelengths. These are provided by high power stimulation elements optionally as LEDs or laser diodes. The integration of photo diodes provides the feedback for power control of each individual element, guaranteeing a stable stimulation source, independent of element aging.

    LED/laser Diodes Stimulation

    Available stimulation wavelengths:

      • (LED/laser diodes)
        UV (365 nm), Violet (405 nm), Blue (458 nm), Green (525 nm), Yellow (590 nm), IR (850 nm), Red (620 nm)

    Modes of operation for OSL:

      • Continuous Wave OSL (CW-OSL)
      • Linear Modulated OSL (LM-OSL)
      • Pulsed OSL (POSL)

    Select up to three wavelengths per OSL unit:

    LED stimulations:

      • Module# L0403 – Blue LED stimulation 458 ± 5 nm (max. 100 mW/cm² at sample position)
      • Module# L0404 – IR LED stimulation 850 ± 20 nm (max. 300 mW/cm² at sample position)
      • Module# L0405 – Green LED stimulation 525 ± 20 nm (max. 80 mW/cm² at sample position)
      • Module# L0406 – Yellow LED stimulation 590 ± 30 nm (max. 50 mW/cm² at sample position)
      • Module# L0410 – VioletLED stimulation 505 ± 3 nm (max. 100 mW/cm² at sample position)
      • Module# L0406 – UV LED stimulation 365 ± 3 nm (max. 100 mW/cm² at sample position)
      • Module# L0419 – Red LED stimulation (620 nm)

    Laser diode stimulation:

      • Rise/fall time: < 10 ns
      • ON-Time: 50 ns to continuous wave
      • Module# L0407 – Blue laser diode stimulation 445 ± 3 nm (max. 100 mW/cm² at sample position)
      • Module# L0408 – IR laser diode stimulation 850 ± 3 nm (max. 300 mW/cm² at sample position)
      • Module# L0409 – Violet laser diode stimulation 405 ± 3 nm (max. 100 mW/cm² at sample position)


    Compact Design

      • Provides thermal and optical stimulation for up to 3 different wavelengths.

    No Crosstalk

      • Independent operation of measurement chamber and sample changer ensures absence of stimulation and radiation crosstalk.


      • Software controlled switch of detection filters within a measurement sequence.


      • Highly homogeneous and stabilized optical stimulation provides identical measurement conditions.


      • IP based system allows remote operation and technical support from anywhere in the world. 

    Technical Specifications

    Sample Automated 40-position sample changer
    Sample Carousel 2 exchangeable sample carousels with 40-positions each
    Thermal Stimulation 0.1 - 20oC / s (@Tmax = up to 710oC)
    Optical Stimulation
    • Up to 3 wavelengths per OSL unit
    • Available stimulation wavelengths
      • (LED/laser diodes)
      • UV (365 nm), Violet (405 nm), Blue (458 nm),
      • Green (525 nm), Yellow (590 nm), IR (850 nm)
    • Modes of OSL operation:
      • Continuous Wave OSL (CW-OSL)
      • Linear Modulated OSL (LM-OSL)
      • Pulsed OSL (POSL)
      Detection Unit UV-VIS PMT (default), Optional: Red sensitive
      PMT, near-IR PMT
      Laptop or PC Requirement  Windows 7 or latest with 2 Ethernet ports
      Power Requirement 110 – 250 V AC, 4 A
      Dimension 300 x 420 x 350 mm
      Weight Up to 50 kg
      Certification Manufactured under ISO 9001
      guidelines, CE conform


        • Operating: LexStudio 2.0
        • Evaluation: LexEva
        • Operating & Evaluation: TL Studio

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