Reflection gratings are used in a variety of optical applications requiring spatial separation of light by wavelength. LightSmyth’s ultra-low
scatter reflection gratings are fabricated using projection lithography and reactive-ion-etch of single-crystal-silicon substrates. Gratings may
be coated by a variety of metallic and dielectric materials and optimized for your application using our highly accurate coating simulation
software and state-of-the-art coating facility. Each grating is a master, not a replica, resulting in low-scatter and long lasting performance.
LightSmyth reflection gratings reduce scattered light up to 100X compared to conventional commercial replicated holographic gratings and mechanically ruled gratings.
Advantages:
Each grating is a high-performance master, no polymers used
Very low cost (lower than prices of replicated gratings)
Free of replication/ruling flaws; ultra-low scatter
Robust single crystal silicon substrate
Copper-like thermal conductivity
Bests Pyrex glass in minimizing thermal expansion
Applications:
Remote Optical Sensors and Spectroscopy
High power lasers
Spectral beam combining
Astronomy and Space exploration
产品列表：
|
Part Number2 |
Line
Density |
Groove depth (nm) |
Size (mm)1, 6 |
|
SLG-C72-1212A-Al |
7200 |
50 |
12.5 × 12.5 |
|
SLG-C72-2525A-Al |
7200 |
50 |
25 x 25 |
|
Part Number2 |
Line Density |
λPE (nm)3, 4, 5 |
Size (mm)1, 6 |
|
SLG-C36-1212A-Al |
3600 |
240nm(s); 480nm(p) |
12.5 × 12.5 |
|
SLG-C24-2525A-Al |
2400 |
300nm(s); 540nm(p) |
12.5 × 12.5 |
|
SLG-C18-2009A-Al |
1800 |
390nm(s); 660nm up to 1µm(p) |
20 x 9 |
|
SLG-C17.4-2209-Al |
1740 |
TBD |
22.1 x 9.1 |
|
SLG-C16.5-2912-Al |
1650 |
TBD |
29.1 x 12.1 |
|
SLG-C14.8-2410-Al |
1480 |
TBD |
24.1 x 10.1 |
|
SLG-C12-1212A-Al |
1200 |
580nm(s); 1µm, 1.55µm(p) |
12.5 x 12.5 |
|
SLG-C12-2525A-Al |
1200 |
580nm(s); 1µm, 1.55µm(p) |
25 x 25 |
|
Notes: |
1 Second dimension corresponds to the groove length |
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2 The standard reflective coating is Aluminum. Aluminum + MgF2 protective layer, Aluminum + Al2O3 protective layer, and gold coatings are available as an option |
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3 The peak efficiency wavelength, λPE, indicates wavelength(s) of highest efficiency for a given polarization state (in parenthesis) |
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4 P-polarization: Incident
electric field vector is perpendicular to grating lines. |
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5 Values are given for Littrow mount. |
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6 Typical grating thickness is
approximately 0.7 mm. |
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