Research range – holographic
Description
Our research range of high-quality replica reflection gratings includes both ruled and holographic types. Generally ruled gratings have higher efficiency, while holographics have lower stray-light levels and are available in closer rulings. For the UV, however, blazed holographics are available with a similar profile and efficiency to ruled types. Efficiency curves are available on request.
Data for calculation
Light of wavelength λ incident at an angle i will be diffracted at angles i' given by:
sin i'=Gnλ - sin i
where G = groove density (lines/mm) and n is the order of diffraction (any integer). Blazed gratings have facets inclined at an angle b to the surface to concentrate light into the first order (n = +1). When the grating used in the Littrow condition (retroreflection, i = i') peak efficiency will be near the blaze wavelength shown (=(2/G)sin b).
| Item code | Lines/mm | Blaze (nm) | Size (mm) | Type | Price per item (£ GBP) |
Stock available | Volume discount available |
Datasheets & customisation options |
Select amount |
|---|---|---|---|---|---|---|---|---|---|
| 2400 DI 240 | 2400 | 240 | 25 x 25 x 9.5 | Blazed for UV | £158.27 | ||||
| 1200 DI 240 | 1200 | 240 | 25 x 25 x 9.5 | Blazed for UV | £158.27 | ||||
| 2400 DI 00 | 2400 | – | 25 x 25 x 9.5 | Optimised for visible | £158.27 | ||||
| 1200 DI 00 | 1200 | – | 25 x 25 x 9.5 | Optimised for visible | £158.27 | ||||
For more information regarding stock availability icons, please see our shipping page.
