Line Density

1200

lines/mm

Optimum Angle of Incidence 1

68

degrees

Wavelength Range (in vacuum)

1526-1566

nm

Line Density Uniformity (within grating)

lines/mm

High Performance Reflection Grating

Diffraction Efficiency (p-polarization) 2

>90

%

1 Optical grating performance will remain substantially similar over a 5 ? variation in angle of incidence.

2 P-polarization: Incident electric field vector perpendicular to grating lines

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.

1200 lines/mm

12.5 × 12.5 mm

High

SLG-C12-1212A-Au-HP

25 × 25 mm

High

SLG-C12-2525A-Au-HP