T-GP3512L - VPH Transmission Grating, 840 nm DWL, 1200 Lines/mm, 30.3° AOI, 50 mm x 30 mm
T-GP3512L - VPH Transmission Grating, 840 nm DWL, 1200 Lines/mm, 30.3° AOI, 50 mm x 30 mm
- Design Wavelength (DWL) and Spatial Frequency Options:
- 840 nm: 1200 Lines/mm
- 900 nm: 1000 Lines/mm
- 930 nm: 900, 1200, or 1500 Lines/mm
- 1030 nm: 800 or 1800 Lines/mm
- 1300 nm: 800 Lines/mm
- Design Wavelength 840 nm
- Spatial Frequency 1200 lines/mm
- Angle of Incidence at the Design Wavelength 30.3°
-
Diffraction Efficiency 730 nm: S-Pol > 50%; P-Pol > 60%
840 nm: S-Pol > 80%; P-Pol > 80%
950 nm: S-Pol > 60%; P-Pol > 50% - Broadband Antireflection Coating Performance at the Specified AOI (Per Surface) 650 - 1010 nm Ravg < 1.0%
- Cover Plate Substrate or Equivalent
- Dimensions 50.0 mm x 30.0 mm x 6.0 mm
- 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-GP3512L Specifications | |
|---|---|
| Design Wavelength | 840 nm |
| Spatial Frequency | 1200 ± 2 lines/mm |
| Line Perpendicularity | ±1° Off of 50 mm Edge |
| Angle of Incidence (AOI)a | 30.3° ± 1° |
| Diffraction Efficiencyb | 730 nm: S-Pol > 50%; P-Pol > 60% 840 nm: S-Pol > 80%; P-Pol > 80% 950 nm: S-Pol > 60%; P-Pol > 50% |
| BBAR Coatingc | 650 - 1010 nm Ravg < 1.0% |
| 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 |