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Broadband Polarizing Beamsplitter Cubes, AR Coating: 420 nm-680 nm MPBS631

MPBS631
$494.80
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Broadband PBS 420-680 nm — Model MPBS631

N-SF1, optimized for 420 nm-680 nm, cube size 20.0 mm×20.0 mm×20.0 mm, extinction ratio >1000:1.

Overview

LBTEK mounts the 20 mm broadband polarizing beamsplitter cube (AR coating: 420nm-680nm) inside a cubic housing compatible with 16 mm cage systems. A scribe line on the top face marks the beam direction. M3 threaded holes on the side allow connection to 16 mm cage systems via a Ø4 mm cage-compatible mounting post. Four SM05 internal-thread ports accept 12.7 mm lens tubes. M4 threaded holes at the base support post mounting.

Key Features

  • Extinction ratio (Tp:Ts) >1000:1
  • Spectroscopic film: Tp>90%, Rs,avg>95%
  • AR coating: Ravg<0.5% (6°input face, per surface)
  • Optical coatings: AR coating + beamsplitter film
  • Transmitted wavefront error: λ/4
  • Surface quality: 40/20
  • Beam deviation: transmission: 0° ± 5 arcmin; reflection: 90° ± 5 arcmin
  • Substrate: N-SF1

Applications

  • Laser polarization control and beam separation
  • Interferometry and polarimetry setups
  • Optical isolators and magneto-optic modulators
  • Polarization-sensitive imaging and spectroscopy
  • High-contrast laser systems requiring stable extinction
Optical component materialN-SF1
Size20.0 mm×20.0 mm×20.0 mm
Dimensional tolerance±0.25 mm
Clear Aperture>80% CA
Operating Wavelength420 nm-680 nm
CoatingAR coating + beamsplitter film
Anti-reflective coatingRavg<0.5% (6°input face, per surface)
Spectroscopic filmTp>90%, Rs,avg>95%
Extinction ratio (Tp:Ts)>1000:1
Surface finish (scratches/pits)40/20
Transmitted Wavefront Error (TWE) (@633 nm)λ/4
Surface Flatness (@633 nm)λ/4
Exit angletransmission: 0° ± 5 arcmin; reflection: 90° ± 5 arcmin
Specification Sheet PDF — Download
CAD Drawing Download
3D Model (STL) STL — Download
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Product Family: Broadband Polarizing Beamsplitter Cubes, AR Coating: 420 nm-680 nm (8 variants)

Product ▴▾ SKU Size ▴▾ Clear Aperture ▴▾ Operating Wavelength ▴▾
Broadband Polarizing Beamsplitter Cubes, AR Coating: 420 nm-680 nm PBS651 PBS651 50.8 mm×50.8 mm×50.8 mm 80% CA 420 nm-680 nm View
Broadband Polarizing Beamsplitter Cubes, AR Coating: 420 nm-680 nm PBS641 PBS641 25.4 mm×25.4 mm×25.4 mm 80% CA 420 nm-680 nm View
Broadband Polarizing Beamsplitter Cubes, AR Coating: 420 nm-680 nm PBS631 PBS631 20.0 mm×20.0 mm×20.0 mm 80% CA 420 nm-680 nm View
Broadband Polarizing Beamsplitter Cubes, AR Coating: 420 nm-680 nm PBS621 PBS621 12.7 mm×12.7 mm×12.7 mm 80% CA 420 nm-680 nm View
Broadband Polarizing Beamsplitter Cubes, AR Coating: 420 nm-680 nm PBS611 PBS611 10.0 mm×10.0 mm×10.0 mm 80% CA 420 nm-680 nm View
Broadband Polarizing Beamsplitter Cubes, AR Coating: 420 nm-680 nm PBS601 PBS601 5.0 mm×5.0 mm×5.0 mm 80% CA 420 nm-680 nm View
Broadband Polarizing Beamsplitter Cubes, AR Coating: 420 nm-680 nm MPBS641 MPBS641 25.4 mm×25.4 mm×25.4 mm 80% CA 420 nm-680 nm View
Broadband Polarizing Beamsplitter Cubes, AR Coating: 420 nm-680 nm MPBS631 Current MPBS631 20.0 mm×20.0 mm×20.0 mm >80% CA 420 nm-680 nm