供应美国 Lightsmyth 反射光栅 Premium Reflection Gratings

4.  Ultra-High Efficiency Reflecting Grating  超GX反射光栅   LightSmyth’s ultra-high efficiency reflection gratings are designed for use in telecom polarizatire fabricated using projection lithography and reactive-ion-etch on a single-crystal-silicon substrate and metalized (gold for IR) 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.
 
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
 
Applications:
Optical telecommunications (laser sources, polarization diversity systems)
High power lasers
Tunable lasers
 
产品列表：

Telecom Reflection Gratings
P/N	Line Density (Lines/ mm)	Line Density Uniformity (Lines/mm)	Angle of Incidence (°)	Wavefront (@1545 nm λ2)	Thickness	Substrate Material
SLG-C12	1200	0.001	68+1		0.68+0.050	Silicon
STG-C12	1200			<0.2	5.7+0.1	Fused silica
SLG-C11.7	1169.59	0.001	65+1		0.68+0.050	Silicon
STG-C11.7	1169.59			<0.2	5.7+0.1	Fused silica
Notes:	1 P-polarization: E vector is perpendicular to the grating line
	2 Over 25×12 mm aperture
	3 Better tolerances and surface quality available for custom products
	The following parameters apply to SLG-12 and SLG-11.7 products: – Wavelength Range (in vacuum) = 1525-1565 nm – Operational Polarization1 = P- – Diffraction Efficiency = >90% – Coating = Gold – Technology = lithographic patterning, reactive ion etch – Width and Height Tolerance3 = +0.2 mm – Grating clear aperture (CA) = Centered, 0.5 mm from substrate edges – Surface quality in CA = 60/40 scratch/dig

 5.  Standard Reflection Gratings  标准反射光栅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 (Lines/mm)	Groove depth (nm)	Size (mm)1, 6
SLG-C72-1212A-Al	7200	50	12.5 × 12.5
SLG-C72-252-Al	7200	50	25 x 25

 

Part Number2	Line Density (Lines/mm)	λPE (nm)3, 4, 5	Size (mm)1, 6
SLG-C36-1212A-Al	3600	240nm(s); 480nm(p)	12.5 × 12.5
SLG-C24-252-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-C12-252-Al	1200	580nm(s); 1µm, 1.55µm(p)	25 x 25
Notes:	1 Second dimension corresponds to the groove length
	2 The standard reflective coating is Aluminum. Aluminum + MgF2 protective layer, Aluminum + Al2O3 protective layer, and gold coatings are available as an option
	3 The peak efficiency wavelength, λPE, indicates wavelength(s) of highest efficiency for a given polarization state (in parenthesis)
	4 P-polarization: Incident electric field vector is perpendicular to grating lines. S-polarization: incident electric field vector is perpendicular to grating lines
	5 Values are given for Littrow mount.
	6 Typical grating thickness is approximately 0.7 mm. Substrate height and width tolerance is +0.3 mm. Grating composition: single crystal silicon, reactive ion etch, reflective metal coating.