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    Fluorescence Infrared Detection cards


    Fluorescence cards are based on rare-earth ions embedding in special solid state matrix coated on a substrate and laminated with clear plastic sheeting (IR detector card - FID-C) or incorporated into Ceramic Disks (FID-CD).

    FID-Cards and FID-CD disks can be applied to detect and locate IR radiation from Near IR-light sources such as Nd-YAG lasers, LED and Laser Diodes and to evaluate spatial distribution of laser or LED beam intensity directly.

    Due to high efficiency these detectors can be used in common under light condition and not required previously charging from another sort of light (UV or IR source, for example). When FID cards or discs are used for lasers - common safety precautions must be observed. There are no radioactive and toxic components used in FID products fabrication, so they are safe even when damaged by extremely high density of IR irradiation (above 109 W/cm2). FID-CD discs are reusable and can be repaired after laser induced heat damage by their surface polishing.

    Technical Specification


    FID-C (cards)

    (ceramic disks)

    Spectral range

    760-1600 nm

    Sensitivity (depending on wavelength, see graph.1-2)

    1-50 mW/mm2

    Dynamic range


    Peak emission wavelength (see graph.3-4)

    560 nm

    560 or 660 nm

    Time response


    Image resolution (typical)

    ≥4 lines/mm

    Energy conversion (for IR emission at 960nm with power density 1 W/cm2)


    Damage threshold continuous

    20 W/cm2

    100 W/cm2

    Damage threshold intermittent

    100 W/cm2

    500 W/cm2


    total: 8.5 x 5.5 cm

    sensitive area: 2x2 cm, 5x5 cm, 5x8 cm

    total: Ø2.9cm, Ø3.9cm

    sensitive area: Ø1.9cm, Ø2.9cm

    * FID-C can be made in 13x18 cm and 18x24 cm standards according special order.

    Graph 1. Absorption spectrum (part 1)
    Graph 2. Absorption spectrum (part 2)
    Graph 3. Emission spectrum (var.1)
    Graph 4. Emission spectrum (var.2)
    click image to enlarge
    Sample of Project made for Telekom Austria