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Diffraction Grating(100) - List of Manufacturers, Suppliers, Companies and Products

Diffraction Grating Product List

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Transmission-type grating (diffraction grating) "VPHG" [High diffraction efficiency]

Transmission-type grating (diffraction grating) "VPHG" [High diffraction efficiency]

Wasatch Photonics' transmission volume phase holographic grating: high diffraction efficiency! Low polarization dependence! Uniform performance! Robust!

Wasatch Photonics' Volume Phase Holographic (VPH) Gratings are products optimized for each application through multiple patented design technologies, ranging from stock items for R&D to custom gratings for OEMs. <Advantages> - No degradation occurs in the master and copies due to optical replication - Smoothly varying diffraction efficiency with respect to wavelength - High dispersion: 150 ~ nearly 6000 lines/mm - Low polarization dependence - Compact optical design due to transmission type - Wavelength tuning possible by varying the angle of incidence (AOI) - No ghosting, low scattering: 10 times less stray light than ruled gratings - Excellent durability due to a shielded structure with two substrates - Easy to clean - Custom sizes up to 300mm can be created

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Tohoku University Technology: Wavefront control element and diffraction grating: T15-001

Tohoku University Technology: Wavefront control element and diffraction grating: T15-001

Manufacture small structure in short time by controlling the metallic glass material shape

In X-ray and neutron interferometry, the wavefront control elements must be precisely shaped. Grating with high-precision shape is required especially for interferometer where metallic glass grating is used as wavefront control elements. To obtain a metallic glass grating, it is preferable to bring the grating as close as possible to the crystallization initiation temperature with fast heat-up. However, more the temperature is high, more the lifetime time for the supercooled liquid is short. Therefore, the metallic glass material has to be molded while the viscosity is still high. In addition, the conventional grating manufacturing has difficulty to obtain small structures and the process needs long time. 　This invention is able to form a metallic glass material with low viscosity, and to provide a manufacturing method, wavefront-controlled elements and diffraction grating with structure smaller than few 10μm having precise shape control in a short time. This invention has a process of heating a metallic glass material in a supercooled state to a temperature above the crystallization begins, and mixing until the crystallization is completed.

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Near-infrared blazed diffraction grating (gold-coated)

Near-infrared blazed diffraction grating (gold-coated)

All products are sold individually as standard specifications. We provide short delivery times due to complete stock sales.

■Reflective type / Replica grating ■Gold coating is used for the reflective film ■Compared to conventional aluminum coatings, efficiency is improved by 15-20% in the wavelength range of 0.7-1.1μm *You can download the catalog from Edmund Optics Japan that features this product below.

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