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T-GP3518F - VPH Transmission Grating, 532 nm DWL, 1800 Lines/mm, 28.6° AOI, 50 mm x 30 mm

Fosco Connect Part No.: T-GP3518F

  • $ 1,525.00 or



T-GP3518F - VPH Transmission Grating, 532 nm DWL, 1800 Lines/mm, 28.6° AOI, 50 mm x 30 mm

Product Drawing

  • Design Wavelength (DWL) and Spatial Frequency Options:
    • 532 nm: 1800 Lines/mm
    • 600 nm: 600 Lines/mm
  • Ø1", Ø2", and 50.0 mm x 30.0 mm Gratings Available
  • High First-Order Diffraction Peak Efficiency (See Tables Below)
  • Low Polarization-Dependent Loss
  • 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
  • Design Wavelength 532NM
  • Spatial Frequency 1800 lines/mm 
  •  Angle of Incidence at the Design Wavelength 28.6°
  • Diffraction Efficiency 450 nm: S-Pol > 45%; P-Pol > 60%
    532 nm: S-Pol > 80%; P-Pol > 80%
    650 nm: S-Pol > 40%; P-Pol > 40%
  • Broadband Antireflection Coating Performance at the Specified AOI (Per Surface) 400 - 700 nm
    Ravg < 1.5%
  • Cover Plate Substrate N-BK7 or Equivalent
  • Dimensions 50.0 mm x 30.0 mm x 6.0 mm
Common Specifications
Grating Film Dichromated Gelatin
Cover-Plate Substrate N-BK7 or Equivalent
Thickness Tolerance ±0.2 mm
Spatial Frequency Tolerance ±2 lines/mm
AOI Tolerance ±1°
Transmitted Wavefront
Error (RMS)
<λ/4 at 632.8 nm
Surface Quality 40-20 Scratch-Dig
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