Products: Gratings

Princeton Instruments monochromators and spectrographs use diffraction gratings as the optical element which separates (disperses) polychromatic “white” light into individual wavelengths (colors).

When polychromatic light encounters the grating it is dispersed so that each wavelength reflects from the grating at a slightly different angle. Dispersed light is then reimaged by the monochromator or spectrograph so that individual wavelengths (or a desired band of wavelengths) can be directed to a detection system or sample.

Standard* Gratings

Groove Density	Blaze Wavelength	Available for:	Efficiency Curve
50 gr/mm	60 nm	IsoPlane, SpectraPro, TriVista	view curve
150 gr/mm	300 nm	Isplane, SpectraPro, TriVista	view curve
150 gr/mm	500 nm	IsoPlane, SpectraPro, TriVista	view curve
150 gr/mm	800 nm	IsoPlane, SpectraPro, TriVista	view curve
150 gr/mm	1.25 μm	IsoPlane, SpectraPro, TriVista	view curve
300 gr/mm	300 nm	IsoPlane, SpectraPro, TriVista	view curve
300 gr/mm	500 nm	IsoPlane, SpectraPro, TriVista	view curve
300 gr/mm	750 nm	IsoPlane, SpectraPro, TriVista	view curve
300 gr/mm	1.2 μm	IsoPlane, SpectraPro, TriVista	view curve
300 gr/mm	2 μm	IsoPlane, SpectraPro, TriVista	view curve
600 gr/mm	300 nm	IsoPlane, SpectraPro, TriVista	view curve
600 gr/mm	500 nm	IsoPlane, SpectraPro, TriVista	view curve
600 gr/mm	750 nm	IsoPlane, SpectraPro, TriVista	view curve
600 g/mm	1 um	IsoPlane, SpectraPro, TriVista	view curve
600 gr/mm	1.6 um	IsoPlane, SpectraPro, TriVista	view curve
1200 gr/mm	300 nm	IsoPlane, SpectraPro, TriVista	view curve
1200 gr/mm	500 nm	IsoPlane, SpectraPro, TriVista	view curve
1200 gr/mm	750 nm	IsoPlane, SpectraPro, TriVista	view curve
1200 gr/mm	blazed holographic - UV optimized	IsoPlane, SpectraPro, TriVista	view curve
1200 gr/mm	holographic - VIS optimized	IsoPlane, SpectraPro, TriVista	view curve
1800 gr/mm	500 nm	IsoPlane, SpectraPro, TriVista	view curve
1800 gr/mm	blazed holographic - UV optimized	IsoPlane, SpectraPro, TriVista	view curve
1800 gr/mm	holographic - VIS optimized	IsoPlane, SpectraPro, TriVista	view curve
2400 gr/mm	240 nm	IsoPlane, SpectraPro, TriVista	view curve
2400 gr/mm	blazed holographic - UV optimized	IsoPlane, SpectraPro, TriVista	view curve
2400 gr/mm	holographic - VIS optimized	IsoPlane, SpectraPro, TriVista	view curve
3600 gr/mm	240 nm	IsoPlane, SpectraPro, TriVista	view curve
3600 gr/mm	holographics - UV opimized	IsoPlane, SpectraPro, TriVista	view curve

*Larger 68 x 84 mm size gratings are available for 1200 g/mm and higher density gratings. Other blaze wavelength and groove density options are also available. Contact your sales representative for more information.

Available Coatings for Gratings

Princeton Instruments gratings are supplied with a bare aluminum coating, which offers approximately 85-90% reflectivity from the UV through the NIR, increasing to ~98% in the SWIR and MIR.

We also offer protected gold coating on gratings which will increase the efficiency of a grating by up to 15% in the NIR. Gold is unsuitable for wavelengths shorter than 600 nm. Refer to reflectance information below.