Request InfoHellma USA Inc.Hellma Cells is offering holographically and mechanically ruled gratings from Carl Zeiss. Holographic styles include sinusoidal, echelette and laminar types with wavelengths ranging from 4 nm to 1 µm. These are suitable for spectrometers and monochromators for NIR to UV and synchrotron radiation. Mechanical versions include sawtooth and amplitude types with wavelengths from 4 nm to 25 µm. These gratings can be used for spectrometers and monochromators for high-power lasers.See full productRelated content from Photonics MediaPRODUCTSPhotonics Spectra November 2022 IssueEmission Line FiltersTwo Hydrogen Alpha (H-alpha) Emission Line Filters for astronomy applications have been announced by Alluxa Inc. The Five-cavity H-alpha Filter has a 50% B+W of 0.35 nm, a 1% B+W of <0.6 nm,...Photonics Showcase May 2022 IssueFully Automated Raman ImagingThe new WITec alpha300 apyron now takes 3D Raman imaging automation to the next level. 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