Holographic Reflective Diffraction Gratings
Description
Holographic Reflective Diffraction Gratings
Specifications |
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|---|---|
| Groove Density: | 600-2400 l/mm |
| Spectral Range: | 250-500nm |
| Blaze: | Not Blazed |
| Blaze Wavelength: | no nm |
| Dimension (Length): | 12-50 mm |
| Dimension (Height): | 12-50 mm |
| Dimension (Thickness): | 6 or 9.5 mm |
| Substrate Material: | Custom |
Features
- Holographic Design: Utilizes holographic interference patterns to create finely detailed sinusoidal patterns, reducing or eliminating blazed grating effects such as ghost images and stray light, ensuring precise spectral dispersion.
- High Efficiency: While holographic gratings typically have lower efficiency compared to ruled gratings, they exhibit comparable efficiency when the ratio of scribed width to wavelength approaches 1. With an absolute diffraction efficiency ranging from 45% to 65%, these gratings offer excellent performance across various applications.
- Broad Spectral Range: Aluminized coating ensures exceptional reflectivity in the UV, visible, and IR spectral ranges, enabling accurate spectral analysis and dispersion.
- Dimensional Precision: Manufactured with dimension tolerances of ±0.5mm and a clear aperture of ≥90%, ensuring consistent optical performance and minimal light loss.
- Customizable Options: Available in multiple groove densities (1200-2400 grooves/mm) and dimensions (mm), providing flexibility to meet specific application requirements.
- Optional Thickness: Offered with optional thicknesses of 6.0mm or 9.5mm, catering to diverse experimental setups and optical systems.
- Durable Construction: Constructed from high-quality optical glass, ensuring durability and longevity in demanding laboratory environments.
- Bare Aluminum Coating: Coated with bare aluminum to maximize reflectivity and minimize light absorption, enhancing overall performance and efficiency.
Summary:
- Material: Optical Glass
- Dimension Tolerance: ±0.5mm
- Clear Aperture: ≥90%
- Thickness: 6.0mm or 9.5mm (optional)
- Thickness Tolerance: ±0.5mm
- Absolute Diffraction Efficiency: 45%-65%
- Groove Density: 1200-2400 grooves/mm (optional)
- Coating: Bare Aluminum
Applications
- Spectrometers and Spectrophotometers
- Monochromators and Optical Filters
- Laser Systems and Interferometers
- Analytical Instruments and Environmental Monitoring
- Astronomy and Astrophysics Research
For pricing, technical or any other questions please contact the supplier
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- No markups, no fees
- Direct contact with supplier
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How to order?
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Ships from:
China
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Sold by:
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On FindLight:
since 2023
Frequently Asked Questions
Holographic gratings are a type of diffraction grating that is created by exposing a polished negative to the interference of two laser beams, forming fringes and creating a sinusoidal pattern on the exposure medium.
Holographic gratings are less likely to produce a blaze and have a lower efficiency compared to ruled gratings. However, when the scribed width to wavelength ratio is close to 1, the efficiency of holographic gratings is virtually the same as that of scribed gratings.
Holographic gratings are commonly used in spectrometers, spectrophotometers, and monochromators.
The aluminized holographic gratings have great reflectivity in the ultraviolet, visible, and infrared spectral ranges.
Customers can select holographic gratings based on their size, groove spacing, and blaze wavelength requirements.