$Diffraction Gratings for Oriel® MS125 Spectrograph$

Diffraction Gratings for Oriel^® MS125 Spectrograph

$Diffraction Gratings for Oriel® MS125 Spectrograph$

Diffraction Gratings for Oriel^® MS125 Spectrograph

High quality diffraction gratings are available for use with the Oriel^® MS125 spectrograph. This selection covers a broad wavelength range, making the MS125 a flexible instrument that meets the needs of many different applications. Gratings can be easily interchanged. The MS125 is designed to hold one grating at a time.

High quality
Broad wavelength coverage
Easy installation
Efficient performance
Ruled and holographic gratings
Special orders welcome

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Compare	Description	Compatibility	Price
$Diffraction Gratings for MS125 Spectrograph$	77410 Diffraction Gratings for MS125 SpectrographMS125 Grating, Holographic, 1200 lines/mm, 240 nm blaze, 200-600 nm range	UNIVERSAL
$Diffraction Gratings for MS125 Spectrograph$	77411 Diffraction Gratings for MS125 SpectrographMS125 Grating, Ruled, 1200 lines/mm, 360 nm blaze, 200-1000 nm range	UNIVERSAL	$445
$Diffraction Gratings for MS125 Spectrograph$	77412 Diffraction Gratings for MS125 SpectrographMS125 Grating, Ruled, 1200 lines/mm, 750 nm blaze, 475-1000 nm range	UNIVERSAL	$445
$Diffraction Gratings for MS125 Spectrograph$	77413 Diffraction Gratings for MS125 SpectrographMS125 Grating, Ruled, 600 lines/mm, 225 nm blaze, 200-400 nm range	UNIVERSAL
$Diffraction Gratings for MS125 Spectrograph$	77414 Diffraction Gratings for MS125 SpectrographMS125 Grating, Ruled, 600 lines/mm, 370 nm blaze, 270-1000 nm range	UNIVERSAL	$445
$Diffraction Gratings for MS125 Spectrograph$	77415 Diffraction Gratings for MS125 SpectrographMS125 Grating, Ruled, 600 lines/mm, 700 nm blaze, 450-2000 nm range	UNIVERSAL	$520
$Diffraction Gratings for MS125 Spectrograph$	77416 Diffraction Gratings for MS125 SpectrographMS125 Grating, Ruled, 400 lines/mm, 325 nm blaze, 200-750 nm range	UNIVERSAL	$410
$Diffraction Gratings for MS125 Spectrograph$	77417 Diffraction Gratings for MS125 SpectrographMS125 Grating, Ruled, 400 lines/mm, 500 nm blaze, 275-1250 nm range	UNIVERSAL	$445
$Diffraction Gratings for MS125 Spectrograph$	77419 Diffraction Gratings for MS125 SpectrographMS125 Grating, Ruled, 2400 lines/mm, 275 nm blaze, 200-500 nm range	UNIVERSAL	$445
$Diffraction Gratings for MS125 Spectrograph$	77420 Diffraction Gratings for MS125 SpectrographMS125 Grating, Holographic, 2400 lines/mm, 400 nm blaze, 250-500 nm range	UNIVERSAL

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Features

High Quality

Plane ruled and holographic gratings listed here are fabricated from float glass substrates with an aluminum coating. The Oriel monochromators and spectrographs feature diffraction gratings produced by Richardson Gratings. Both Oriel Instruments and Richardson Gratings are part of the Newport family of brands, and have a long history of working together to design instruments that are appropriate for a wide variety of applications.

Easy Installation

These 30 x 30 mm gratings come pre-aligned in their own frames, allowing them to precisely fit inside the instrument. The frame has a tab that allows the grating to be inserted or replaced inside the spectrograph without touching its surface. Each grating comes with a protective cover and is labeled with the model number, making interchangeability and storage simple. Note that the instrument will need to be recalibrated after replacing the grating.

Plane Ruled Gratings

For a plane blazed grating, the groove spacing and blaze angle determine the distribution of energy. The blaze direction for most gratings is specified for first order Littrow use. In Littrow use, light is diffracted from the grating back toward the source. Gratings used in the Littrow configuration have the advantage of maximum efficiency, or blaze, at specific wavelengths.

Broad Wavelength Coverage

Standard grating assemblies are available from UV, VIS and NIR. The primary wavelength region is where the grating efficiency is greater than or equal to 20%. System efficiency will also be affected by the reflectivity of the mirrors and the grating angle, at any wavelength. The MS125 gratings are available with operating ranges from 200 to 2600 nm.

Blazed Holographic Gratings

Holographic gratings normally have a sinusoidal groove shape, which is the result of recording interference fringe fields in photoresist material. Since the grooves are symmetrical, they do not have a preferred blaze direction and hence the gratings carry no blaze arrows. The range of useful diffraction efficiency is controlled by varying the modulation (the ratio of groove depth to groove spacing). The lower the modulation, the shorter the wavelength limit to which the grating can be used, but the peak efficiency may be lowered as well. We have found that three modulation levels are adequate for nearly all purposes.

High Efficiency

High-efficiency gratings are desirable for several reasons. A grating with high efficiency is more useful than one with lower efficiency in measuring weak transition lines in optical spectra. A grating with high efficiency may allow the reflectivity and transmissivity specifications for the other components in the spectrometer to be relaxed. Moreover, higher diffracted energy may imply lower instrumental stray light due to other diffracted orders, as the total energy flow for a given wavelength leaving the grating is conserved (being equal to the energy flow incident on it minus any scattering and absorption).

Special Orders Welcome

In addition to the gratings listed here, special order gratings may also be available for use in a wide variety of applications. Custom grating requests include gold coating for increased IR efficiency, AlMgF₂ coating for increased UV efficiency and many other requests. Gratings may be installed into a variety of mounts for use in specific monochromators or spectrographs. Contact Newport Sales for more information.