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T-GP3512L - VPH Transmission Grating, 840 nm DWL, 1200 Lines/mm, 30.3° AOI, 50 mm x 30 mm

Fosco Connect Part No.: T-GP3512L

  • $ 1,435.00 or



T-GP3512L - VPH Transmission Grating, 840 nm DWL, 1200 Lines/mm, 30.3° AOI, 50 mm x 30 mm

Product Drawing

  • 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
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