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Beamsplitter Coatings

45°Beamsplitter

 

  

  • Substrate: fused silica, BK7
  • Surface Figure: <λ/10 @ 632.8nm
  • Surface Quality: 40-20
  • Chamfer: 0.5mm, 45°
  • Coating Material: Electron beam deposited dielectric: multi-layers
  • Incident: 0°,45°
  • Laser-Induced Damage Threshold: >5J/cm2 (1.06μm,1ns)

 

Incident Angle Wavelength (nm)   Separating   Tolerance
    Tave/Rave Tp/Rp Tp/Rp  
45° 510-500 50/50     ±3%
45° 780   50/50   ±3%
45° 632.8 50/50     ±3%

 

Dichroic Beamsplitter

 

  

  • Substrate: fused silica, BK7
  • Surface Figure: <λ/10 @ 632.8nm
  • Surface Quality: 40-20
  • Chamfer: 0.5mm, 45°
  • Coating Material: Electron beam deposited dielectric: multi-layers
  • Incident: 0°,
  • Laser-Induced Damage Threshold: >5J/cm2 (1.06μm,1ns)

 

Incident Angle TWavelength (nm) Transmission RWavelength Reflectance
808 >90% 946 >99.5%
808 >90% 1064 >99.5%
808 >90% 1320 >99.5%
940 >90% 1030 >99.5%

 

 

Polarizing Beamsplitter Cubes

 

  

  • Substrate fused: silica, BK7
  • Surface Figure: <λ/10 @ 632.8nm
  • Surface Quality: 40-20
  • Chamfer: 0.5mm, 45°
  • Coating Material: Electron beam deposited dielectric: multi-layers
  • Incident:0°±2°
  • Polarizing: Tp≥98%; Ts≤0.2%
  • Extinction Ratio: Tp:Ts>500:1
  • AR Coating: R<0.25%

 

Wavelength (nm)
632.8
780
830
852
1064
1310
1550
420-470

 

Polarizing Beamsplitter Plates

 

  

  • Substrate fused: silica, BK7
  • Surface Figure: <λ/10 @ 632.8nm
  • Surface Quality: 40-20
  • Chamfer: 0.5mm, 45°
  • Coating Material: Electron beam deposited dielectric multi-layers
  • Imcident Angle: 56.6°±3°
  • Polarizing: Tp≥96%; Ts≤1%
  • Extinction Ratio: Tp:Ts>100:1
  • Wavelength Range: Visible, Near Infrared

 

Wavelength (nm) Wavelength (nm)
20/25.4/30 780
20/25.4/30 1064
20/25.4/30 1310
20/25.4/30 1550

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