Compare Model Drawings, CAD & Specs Reflection Coating Code Availability Price
$398
In Stock
Rp = 67% UF.BS67
In Stock
$398
In Stock
Rp = 76% UF.BS76
In Stock
$398
In Stock
Rp = 80% UF.BS80
In Stock
$398
In Stock
Rp = 90% UF.BS67
In Stock

Specifications

  • Wavelength Range
    730-870 nm
  • Diameter
    25.4 mm
  • Material
    Fused Silica
  • Coating Second Surface
    No coating
  • Angle of Incidence
    45°
  • Polarization
    P
  • Surface Flatness
    λ/4 at 633 nm
  • Surface Quality
    10-5 scratch dig
  • Cleaning
    Non-abrasive method, methanol or isopropyl alcohol on lens tissue recommended
  • Clear Aperture
    > central 85% of diameter
  • Wedge
    <30 arcseconds
  • Thickness
    3 mm

Features

Ultrafast P Polarized Beamsplitters

These beam splitters are well suited for use with intense pulses with durations of 25 femtoseconds or less. Designed to work from 730 to 870 nm at 45 degrees angle of incidence, a specified percentage of the P polarized input will be reflected and the remainder transmitted. Carefully chosen coating material and design yield negligible GDD upon transmission and reflection. The slightly increased substrate thickness prevents any thermally induced deformation. Special care should be taken when mounting the beam splitters, since mechanical tension may lead to surface bending.

Reflectance of 67% Beamsplitter

Typical reflectance vs wavelength of ultra broadband dielectric 67% sub 25 femtosecond beam splitters for an angle of incidence of 45 degrees and p-polarized light.

Reflectance of 76% Beamsplitter

Typical reflectance vs wavelength of ultra broadband dielectric 76% sub 25 femtosecond beam splitters for an angle of incidence of 45 degrees and p-polarized light. 

Reflectance of 80% Beamsplitter

Typical reflectance vs wavelength of ultra broadband dielectric 80% sub 25 femtosecond beam splitters for an angle of incidence of 45 degrees and p-polarized light.

Reflectance of 90% Beamsplitter

Typical reflectance vs wavelength of ultra broadband dielectric 90% sub 25 femtosecond beam splitters for an angle of incidence of 45 degrees and p-polarized light. 

Minimum GDD

GDD vs wavelength for the transmitted beam for beam splitters with a thickness of 3 mm at 45 degrees angle of incidence. The GDD of the coating is negligible both in reflection and transmission. 

FemtoOptics: The Premier Optics Product Line

FemtoOptics™ is the premier optics product line specifically optimized for femtosecond pulse manipulation. Consisting of innovative, high-quality, easy-to-use, cutting-edge optical components and assemblies, we have exceptional support and service for industrial and research applications across the world. For your convenience, Newport part numbers are shown here with the corresponding equivalent FemtoOptics part number. Please click here to learn our complete FemtoOptics offerings.

Newport Part FemtoOptics Part
10Q08-03UF.BS67 OA971
10Q08-03UF.BS76 OA973
10Q08-03UF.BS80 OA975
10Q08-03UF.BS90 OA977