ZEISS PGS Family

The NIR Specialists

ZEISS PGS Family

Plane grating spectrometer

  • Introduction

    The plane grating spectrometers are designed for application in the NIR range for specific measuring tasks. These compact and robust modules measure even thick layers with stable wavelength high resolution and the highest precision, even under extreme process conditions. InGaAs (indium-gallium-arsenide) is used as a detector material. The special combination of aspheric collimator and a focusing lens maintain a good, flat field correction of the spectral imaging.

    Components of the PGS family

    • Blazed plane gratings
    • Aspheric lenses
    • Mono-fiber with slit as optical input
    • Cooled InGaAs photodiode array as opto-electronic output
    • Interfaces, processing software and support
  • Highlights

    Benefits

    • Compact without movable parts
    • Permanently aligned
    • Robust even in harsh environments
    • Fast and simultaneous read-out
    • Permanently calibrated
    • High dynamic range
    • High light sensitivity
    • High reproducibility
    • Low temperature drift
  • Design
    • Central body made of aluminum alloy
    • Input fiber and detector are permanently connected to central body, providing excellent stability
    • Mechanically ruled or holographical exposed plane gratings 
    • The grating surface is designed capture the light of a fiber with NA of up to 0.37
  • Video
  • Specification
      PGS 1.7-256 UC PGS 1.7- 56 PGS 1.7-512 PGS 2.0-256  PGS 2.2-256 
    Optical entrance Infrasil-quartz glass  Diameter: 0.6 mm
    Input round

    Length: 300 mm NA = 0.22 (has to be filled for full specification) mounted in SMA-coupling,

    For PGS 1.7-256 UC: Use NIR-lightguides with core diameter ≥ 600 µm, NA = 0.22 to 0.37

    Output linear Slit width: 80 µm
    Edge Filter 950 nm 950 nm 950 nm 1,350 nm 950 nm
    Plane Grating 484 l / mm, blazed for approx. 1.2 µm 484 l / mm, blazed for approx. 1.2 µm
    484 l / mm, blazed for approx. 1.2 µm  484 l / mm, blazed for approx. 1.4 µm 300 l / mm, blazed for approx. 1.4 µm
    Hamamatsu Diode array G9211-01SPL, 256 pixel  S9203, 256 pixel  S9204, 512 pixel G9206, 256 pixel G9206, 256 pixel
    Spectral range 960–1,690 nm 960–1,690 nm 960–1,690 nm 1,340–2,000 nm 1,000–2,150 nm
    Wavelength accuracy 1 nm
    Temperature induced drift < 0.012 nm/K
    Mean spectral pixel pitch Δλpixel ≈ 3 nm Δλpixel ≈ 3 nm Δλpixel ≈ 1.5 nm Δλpixel ≈ 3 nm Δλpixel ≈ 5 nm
    Resolution ΔλFWHM ≈ 8 nm ΔλFWHM ≈ 8 nm  ΔλFWHM ≈ 6 nm  ΔλFWHM ≈ 8 nm  ΔλFWHM ≈ 16 nm 
    Stray light ≤ 0.1 % as transmission of 10 mm water at 1,405 nm (exposure from halogen lamp)
    Operating temperature 0–40 °C (standard, depending on cooling electronic)
    Minimal bending radius of fiber (for storage and transport) 50 mm 50 mm 50 mm 50 mm
    Minimal bending radius in operation (for wavelength accuracy) 100 mm 100 mm 100 mm 100 mm
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    ZEISS PGS

    Plane Grating Spectrometer Module

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    ZEISS Spectrometer Modules

    Compendium of products, electronic components and software solutions

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