Spectrometer gratings

Ibsen fused silica transmission gratings enable high resolution, high efficiency gratings that are ideal for compact spectrometers

Ibsen offers a line of spectrometer gratings spanning from UV bandwidths over VIS to NIR bandwidths, and also offers custom design of gratings for your OEM application. Production using our stepper lithography or proprietary, cost-effective Holostepper technology, allows manufacture of holographic, 100% fused silica Master gratings at prices previously only possible for replicas.

  • Lithographic or holographic stepper patterning technology combines the highest quality of patterning with the reproducibility and cost level of replicated gratings

  • Grating resolutions up to ~3000 l/mm

  • High diffraction efficiency with high dispersion

  • Low polarization dependence (PDL) over broad spectral ranges

  • Combined wavelength dispersion and folding elements


In addition to OEM grating supply, Ibsen offers a full line of standard spectrometer gratings which are available from stock.

The full Ibsen grating portfolio comprises 4 different grating types that may be suitable for various spectrometry applications:

Extremely high efficiency (any polarization) gratings
(polarization independent gratings)

Extremely high efficiency (single polarization) gratings
(narrowband single polarization gratings)

Very high efficiency spectrometer gratings
(narrowband spectrometer gratings)

High efficiency spectrometer gratings
(full octave spectrometer gratings).


eXtreme efficiency spectrometer gratings

Ideal for Raman and Optical Coherence Tomography

XE gratings from Ibsen are produced by lithographic or holographic stepper technology in 100% dielectric materials. This leads to unbeatable thermal and environmental stability, with no polymers, epoxies, gelatins or metals in the optical path nor in the grating whatsoever. Advanced etching technology ensures high diffraction efficiency and low polarization dependence over a bandwidth of several hundred nm. Low angular sensitivity is an added bonus for module design and assembly.

Which transmission grating to use?

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