The Inprentus Way
Inprentus diffraction gratings are manufactured via contact mode lithography using a custom atomic force microscope (AFM). This process involves using a specially shaped, ultrahard AFM tip to burnish lines in soft metal, such as gold or aluminum.
With this special technique for controlling the tool geometry, Inprentus can write grating lines with blaze angles below 1 degree with an accuracy of 0.1 degree or better, without the need for ion milling or other post-processing. With unique interferometry techniques developed at Inprentus, these grating lines can be positioned with accuracy better than 20 nm over distances of 10 cm or larger.
This entire process endows Inprentus gratings with a resolving power of up to 130,000, which is unprecedented for mechanically ruled diffraction gratings.
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Inprentus is proud of our scientific collaborations – find out more about how our diffraction gratings enable cutting-edge research at Brookhaven National Laboratory: