All Oriel monochromators and spectrographs contain diffraction gratings provided by Richardson Gratings™. Both Oriel and Richardson are part of the Newport family of brands. Ruled and Holographic Gratings
UV, VIS and IR Models
Mounted Gratings for Monochromators and Spectrographs
Unmounted Gratings for Other Applications
Special Order Gratings Available
The choice of gratings for any spectroscopic system depends on the application and must be made as one-step in an iterative process of system design. The radiation source, radiation detector, polarization of radiation, spectral range of interest and desired resolution all play a role in grating selection.
Plane ruled and holographic gratings listed here are fabricated from float glass substrates with an aluminum coating. Figure 1 illustrates the efficiency curves for two popular UV gratings, while Figure 2 shows the reflectance of an IR grating.
Oriel’s 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.
All Oriel monochromators and spectrographs contain diffraction gratings provided by Richardson Gratings™. Both Oriel and Richardson are part of the Newport family of brands.
A grating may be purchased for use in a custom application, where the end user mounts it as appropriate. The orientation of the grating is critical. More information can be found here: http://www.gratinglab.com/Information/Technical_Notes/TechNote7.aspx.
When a grating is used in an Oriel monochromator or spectrograph, it must be precisely mounted to a grating holder specific to the instrument. When ordering a new instrument, gratings are installed and aligned and then the instrument is calibrated. When ordering a mounted grating listed here, it is the user’s responsibility to install it and calibrate the instrument.
Please note Newport provides recalibration services and can install new gratings upon request. Contact Newport for more information.
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. Please contact Newport for information.
Do not touch the surface of the grating; handle the grating by the edges and always wear gloves or finger cots. Use a non-contact cleaning method such as dry, compressed air or a dust bulb to remove excess dust from a grating.
Fig. 1 Typical efficiencies of 77901 / 77902 and77907 / 77908 Gratings in Littrow configuration.
Fig. 2 Typical efficiency of 77941 / 77942 Grating in Littrow configuration.