Products:
Premium Reflection Gratings
LightSmyth Technologies’ high efficiency reflection gratings are designed for use in telecom polarization-diversity optics and laser frequency stabilization. These gratings are fabricated using projection lithography and reactive-ion-etch on a single-crystal-silicon substrate and metalized to achieve very high efficiency for a single polarization. Each grating is a master, not a replica, resulting in low scattered light and long lasting performance. Wafer-scale cost-effective fabrication allows us to offer very competitive prices.
Importantly, LightSmyth reflection gratings reduce scattered light up to 100X compared to conventional commercial replicated holographic gratings and mechanically ruled gratings, providing superior signal to noise ratio and low channel cross-talk. Click here to see comparison plot.
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Advantages:
- Ultra-high efficiency for a single polarization.
- Robust dielectric materials, no polymers are used.
- Each grating is a master; ultra-low scatter.
- Highly competitive pricing; Telcordia-qualified.
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Applications:
- Optical telecommunications (laser sources, polarization diversity systems)
- High power lasers
- Tunable lasers
Specifications
Optical
| Description | Value | Units | ||||
|---|---|---|---|---|---|---|
| Line Density | 1200 | 1480 | 1650 | 1800 | lines/mm | |
| Optimum Angle of Incidence 1 | 68 | 52 | 60 | 71 | degrees | |
| Wavelength Range (in vacuum) | 1526-1566 | 1050-1080 | 1050-1080 | 1050-1080 | nm | |
| Wavelength Range (in medium) 2 | N/A | 1526-1566 | 1526-1566 | 1526-1566 | nm | |
| Line Density Uniformity (within grating) | 0.05 | lines/mm | ||||
| High Performance Reflection Grating | ||||||
| Diffraction Efficiency (p-polarization) 3 | >90 | % | ||||
| Standard Transmission Grating | ||||||
| Diffraction Efficiency (p-polarization) 3 | >85 | % | ||||
| 1 Optical grating performance will remain substantially similar over a 5 ° variation in angle of incidence. | ||||||
| 2 The range is based on bonding grating side to glass substrate with 1.45 refractive index adhesive. | ||||||
| 3 P-polarization: Incident electric field vector perpendicular to grating lines | ||||||
| Parameter | Value | |||
|---|---|---|---|---|
| Substrate length x width | Refer to Ordering Information table for standard substrate dimensions. Clear aperture starts 0.5 mm from the edges of the substrate. Custom grating sizes available upon request. Dimensional tolerance ± 0.20 mm | |||
| Substrate Thickness | 0.675 ± 0.050 mm | |||
| Surface quality | Standard 60/40 scratch/dig; custom up to 10/5 scratch/dig | |||
| Material | Fused silica substrate, non-organic dielectrics. Contains no polymers. | |||
Pricing
Please contact LightSmyth Technologies at 541-431-0026 or info@lightsmyth.com to request a quotation or for additional technical information.
Ordering Information
| Line Density | Size 1 | Performance Grade | Part Number | |||
|---|---|---|---|---|---|---|
| 1200 lines/mm | 12.5 × 12.5 mm | High | SLG-C12-1212A-Au-HP | |||
| Standard | SLG-C12-1212A-Au-SP | |||||
| 25 × 25 mm | High | SLG-C12-2525A-Au-HP | ||||
| Standard | SLG-C12-2525A-Au-SP | |||||
| 1480 lines/mm | 24 × 10 mm | High | SLG-C14.8-2410A-Au-HP | |||
| Standard | SLG-C14.8-2410A-Au-SP | |||||
| 1650 lines/mm | 29 × 12 mm | High | SLG-C16.5-2912A-Au-HP | |||
| Standard | SLG-C16.5-2912A-Au-SP | |||||
| 1800 lines/mm | 20 × 9 mm | High | SLG-C18-2009A-Au-HP | |||
| Standard | SLG-C18-2009A-Au-SP | |||||
| 1 We can cut the grating to your desired dimensions - contact us for a quotation. | ||||||
Custom High-Efficiency Reflection Gratings
LighSmyth also offers custom highly-efficient reflection gratings fabricated to your specifications, including custom wavelength range, line count, size and performance levels.
Our optical engineers will gladly assist with your custom application. Please contact us at 541-431-0026 or info@lightsmyth.com.