T-GP3508U - VPH Transmission Grating, 1300 nm DWL, 800 Lines/mm, 31° AOI, 50 mm x 30 mm
Product Drawing
- High First-Order Diffraction Peak Efficiency (See Tables Below)
- Uniform Performance Over Broad Bandwidths (See Diffraction Efficiency Graphs Below)
- Extremely Low Scatter Between Orders (No Ghosting)
- Dichromated Gelatin (DCG) Film Between Two Glass Substrates
- Ideal for Spectroscopy, Optical Coherence Tomography (OCT), and Laser Pulse Compression
| T-GP3508U Specifications |
| Design Wavelength |
1300 nm |
| Spatial Frequency |
800 ± 2 lines/mm |
| Line Perpendicularity |
±1° Off of 50 mm Edge |
| Angle of Incidence (AOI)a
|
31° ± 1° |
| Diffraction Efficiencyb
|
1230 nm: S-Pol > 75%; P-Pol > 80%
1300 nm: S-Pol > 80%; P-Pol > 80%
1370 nm: S-Pol > 80%; P-Pol > 75% |
| BBAR Coatingc
|
1180 - 1420 nm
Ravg < 0.75% |
| Transmitted Wavefront Error (RMS) |
<λ/4 at 632.8 nm |
| Grating Film |
Dichromated Gelatin |
| Cover-Plate Substrate |
N-BK7 or Equivalent |
| Surface Quality |
40-20 Scratch Dig |
| Dimensions (L x H x T) |
50.0 mm x 30.0 mm x 6.0 mm |
| Clear Aperture |
>42 mm x 22 mm |
| Length Tolerance |
+0.0 mm / -0.2 mm |
| Height Tolerance |
+0.0 mm / -0.1 mm |
| Thickness Tolerance |
±0.2 mm |
