Help with Diffraction Gratings specifications:
Grating Type
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| Ruled Grating | Ruled gratings are produced by physically forming grooves into a reflective surface with a diamond mounted on a ruling engine. Ruled gratings have a relatively sharp peak around their blaze wavelength as a consequence of their "saw tooth" groove profile. | ||
| Holographic | Holographic gratings are formed when a series of interference fringes, corresponding to the grooves of the desired grating, are recorded on a photosensitive layer, and the subsequent chemical treatment forms a modulated profile on the surface of the blank by selective dissolution. | ||
| Other | Any other diffraction grating type not listed. | ||
| Search Logic: | All products with ANY of the selected attributes will be returned as matches. Leaving all boxes unchecked will not limit the search criteria for this question; products with all attribute options will be returned as matches. | ||
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| Grating Design: | |||
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| Plane Reflection | The diffraction grating is planar and reflecting. | ||
| Spherical Reflection | The diffraction grating is spherical and reflecting. A concave is considered spherical. | ||
| Toroidal Reflection | The diffraction grating is toroidal and reflecting. | ||
| Transmission | The diffraction grating is designed for transmission. | ||
| Other | Any other diffraction grating design not listed. | ||
| Search Logic: | All products with ANY of the selected attributes will be returned as matches. Leaving all boxes unchecked will not limit the search criteria for this question; products with all attribute options will be returned as matches. | ||
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| Ion Etched? | Ion etching is used to reduce scattering and increase efficiency. | ||
| Search Logic: | "Required" and "Must Not Have" criteria limit returned matches as specified. Products with optional attributes will be returned for either choice. | ||
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Grating Performance
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| Wavelength Range: | The spectral range covered by a grating is dependent on groove spacing and is the same for ruled and holographic gratings with the grating constant. | ||
| Your choices are... | |||
| UV | Diffraction gratings that are designed for use below 380 nm. | ||
| Visible | Diffraction gratings that are designed for use in the 380 nm to 750 nm wavelength range | ||
| IR | Diffraction gratings that are designed for use above 750 nm. | ||
| Search Logic: | All products with ANY of the selected attributes will be returned as matches. Leaving all boxes unchecked will not limit the search criteria for this question; products with all attribute options will be returned as matches. | ||
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| Groove Frequency: | The number of grooves per unit length for the diffraction grating. The groove frequency determines the spectral range of the diffraction grating. | ||
| Search Logic: | User may specify either, both, or neither of the "At Least" and "No More Than" values. Products returned as matches will meet all specified criteria. | ||
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| Blaze Wavelength: | The optimal wavelength of the diffraction grating. Ruled gratings, due to their "sawtooth" groove profile, have a relatively sharp peak around their blaze wavelength while some holographic gratings have a flatter spectral response. | ||
| Search Logic: | User may specify either, both, or neither of the "At Least" and "No More Than" values. Products returned as matches will meet all specified criteria. | ||
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