Compare Model Drawings, CAD & Specs Diameter Wavelength Range Coating Code Polarization Surface Quality Availability Price
$399
In Stock
25.4 mm 700-950 nm UB.2 S 40-20 scratch-dig
In Stock
$429
In Stock
25.4 mm 680-1080 nm UB.4 P 20-10 scratch-dig
In Stock
$449
In Stock
50.8 mm 700-950 nm UB.2 S 40-20 scratch-dig
In Stock
$469
4 Weeks
50.8 mm 680-1080 nm UB.4 P 20-10 scratch-dig
4 Weeks

Specifications

  • Material
    UV Grade Fused Silica
  • Angle of Incidence
    45°
  • Orientation
    Beam should enter surface marked with an arrow
  • Wavefront Distortion
    λ/10 at 632.8 nm over the clear aperture
  • Surface Flatness
    λ/10 at 632.8 nm over the clear aperture
  • Surface Quality
    40-20 scratch-dig
  • Diameter Tolerance
    +0/-0.25 mm
  • Thickness
    3.0 mm
  • Thickness Tolerance
    ±0.25 mm
  • Wedge
    ≤1 arc min
  • Clear Aperture
    > central 80% of diameter
  • Chamfers
    0.5 mm face width
  • Chamfers Angle Tolerance
    45±15°
  • Cleaning

Features

Thin UV Fused Silica Substrate

Our ultrashort pulse beamsplitters are designed to minimize pulse dispersion and maximize bandwidth for beam sampling and autocorrelation measurements of ultrafast laser pulses. A thin UV grade fused silica substrate with specially designed coating and λ/10 wavefront distortion yields minimized GDD upon reflection and transmission.

S-Polarized Beamsplitters

The UB.2 beamsplitters are used to evenly divide S polarized light at 45° angle of incidence from 700–950 nm, ideal for output from the Spectra Physics Tsunami® Ultrafast lasers. The back surface has an antireflection coating to minimize surface reflection losses and eliminate ghost images. 

P-Polarized Beamsplitters

The UB.4 beamsplitters are used to evenly split the P polarized light at 45° angle of incidence from 680-1080 nm, ideal for Spectra Physics ultrafast amplifiers and oscillators such as Solstice®, Spitfire®, or Mai Tai®. The back surface is uncoated.