Diffraction Gratings
Holographic Gratings
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UV-470 Standard
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Holographic Diffraction Gratings
Spectrum Scientific's holographic gratings are produced using interference lithography. This process results in a smooth groove surface and eliminates the periodic errors found in ruled gratings. Because of this, holographic gratings are commonly used in applications where stray light is a concern. Holographic gratings can have two groove profiles, sinusoidal and blazed.
Sinusoidal groove profiles are the most common groove shape for holographic gratings. The grooves are symmetrical and therefore have no blaze direction. A sinusoidal grating offers a wider spectral coverage compared to a blazed grating but has lower efficiency.
Spectrum Scientific is one of the few companies in the world to offer a blazed holographic diffraction grating. A blazed holographic grating has had the sinusoidal profile transformed into a 'saw tooth' profile. This saw tooth profile increases the efficiency of the diffraction grating over the wavelength region of interest without increasing the stray light. Currently this technique is limited to a blaze region of 200-300mm.
To read more about sinusoidal verses blazed profiles please visit blazed vs sinusoidal.
Spectrum Scientific offers a range of standard gratings. If we do not have a grating that meets your requirement, please contact our sales department as new gratings are manufactured on a regular basis.
Click for Details | Product Description | Part Number | Energy Curve | Price | Lead Time | Qty |
Energy Curves
123 Grooves, 260nm Holographic Grating Energy Curve
240 Grooves, 240nm Holographic Grating Energy Curve
300 Grooves, 250nm Holographic Grating Energy Curve
600 Grooves, 240nm Holographic Grating Energy Curve
700 Grooves, 1100nm Holographic Grating Energy Curve
1200 Grooves, 240nm Holographic Grating Energy Curve
1200 Grooves, 700nm Holographic Grating Energy Curve
1300 Grooves, 800nm Holographic Grating Energy Curve
1440 Grooves, 250nm Holographic Grating Energy Curve
1740 Grooves, 1053nm Holographic Grating Energy Curve
1800 Grooves, 230nm Holographic Grating Energy Curve
2322 Grooves, 300nm Holographic Grating Energy Curve
2400 Grooves, 240nm Holographic Grating Energy Curve
2880 Grooves, 240nm Holographic Grating Energy Curve