• Visible and NIR Coating Options Offered
• Simplifies Benchtop Layout
• Split Incident Beam into Two Displaced Parallel Beams
TECHSPEC® Lateral Displacement Beamsplitters output two parallel beams separated by a fixed distance. The
beamsplitters consist of a precision rhomboid prism cemented to a λ/8 right angle prism. The high tolerance
design ensures the exiting beams are parallel to within 30 arcseconds. Entrance and exit faces feature a multilayer
anti-reflection (AR) coating for increased efficiency. Polarizing and non-polarizing coatings are available.
TECHSPEC® Lateral Displacement Beamsplitters
Non-Polarizing Polarizing
Visible NIR 632.8nm
Substrate: N-BK7 N-BK7 N-BK7
Design Wavelength: 430 - 670nm 720 - 1080nm 632.8nm
Dimensional Tolerance: ±0.1mm ±0.1mm ±0.1mm
Angular Tolerance: ±5 arcsec ±5 arcsec ±5 arcsec
Exiting Beam Parallelism: <2 arcmin <2 arcmin <2 arcmin
Clear Aperture: 80% 80% 80%
Surface Flatness: l/8 l/8 l/8
Surface Quality: 40-20 40-20 40-20
Transmission/Reflection:
P-Polarization: 45% ±5% @ 430 - 670nm 45% ±5% @ 720 - 1080nm T > 95% @ 632.8nm
S-Polarization: 45% ±5% @ 430 - 670nm 45% ±5% @ 720 - 1080nm R > 99% @ 632.8nm
Extinction: Polarization <6% Polarization <6% >1000:1
AR Coating: <0.5% @ 430 - 670nm <0.5% @ 720 - 1080nm <0.3% @ 632.8nm
Size (A) Beam
• High Contrast Over Large Angles of Incidence
• Low Color Shift at Large Angles
• Ideal for Uncollimated Light Sources
Wire Grid Polarizing Cube Beamsplitters are designed
for applications using uncollimated light, such as with
a broadband white light source. Wire Grid Polarizing
Cube Beamsplitters consist of a wire grid polarizer
cemented between two precision high tolerance right
angle prisms. An anti-reflection coating has been applied
to each face of the beamsplitter to provide less
than 0.5% average reflection per surface. Additionally,
these beamsplitters maintain their contrast spectrally
from 400 - 700nm and over a large cone angle of ±25°.
l/10 Plate Beamsplitters
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Wavelength Range: 400 - 700nm
Substrate: N-BK7
Dimensional Tolerance: ±0.3mm
Surface Quality: 40-20
Transmitted Wavefront Distortion (RMS): <0.33λ
Beam Deviation: <5 arcmin
Coating: Ravg <0.5% @ 400 - 700nm
Transmission (typical): Tp >75% for a ±25° cone of light
Efficiency (Tp*Rs) ≥65% for a ±25° cone of light
Clear Aperture: >90%
Wire Grid Polarizing Cube Beamsplitters
Dimensions
(mm) Stock No.
Price
1-5 6-25 26+
25.4 #89-604 £357.00 £282.20
Call
Extinction Ratio
Wavelength
(nm)
Incident Cone of Light
±5° ±10° ±15° ±20° ±25°
400 - 500 2,100:1 2,000:1 1,600:1 1,400:1 1,100:1
500 - 600 4,000:1 3,900:1 2,900:1 2,600:1 1,900:1
600 - 700 6,000:1 5,500:1 4,200:1 3,800:1 2,500:1
Wire Grid Polarizing Cube Beamsplitters
• 30 Arcminute Wedge to Minimize
Internal Interference
• Wide Range of Splitting Ratios
• Fused Silica Substrate
TECHSPEC® λ/10 Plate Beamsplitters are designed
for use with a 45 degree angle of incidence and
random polarization. With a featured 30 arcminute
wedge, the effects of internal interference are minimized.
Each beamsplitter also includes a multi-layer
anti-reflection (AR) coating on the back-surface.
TECHSPEC® λ/10 Plate Beamsplitters have been
optimized for the visible spectrum and are offered in
a variety of splitting ratios. These beamsplitters are
ideal for laser applications due to the wedged design
and high quality Fused Silica substrate.
Substrate: Fused Silica
Diameter Tolerance: ±0.10mm
Thickness: 3.00 ±0.20mm
Surface Flatness: λ/10
Surface Quality: 20-10
Wedge Angle: 30 arcmin
Wedge Tolerance: ±10 arcmin
Edges: Protective Bevel as needed
Coating:
Beamsplitter Coating: R/T (as specified) ±5% @
550nm, ±10% @ 400 - 700nm
AR Coating: Ravg ≤1%, Rabs ≤2% @ 400 - 700nm
30 arcmin
Wedge
Wedged Face
Beam Splitter
Coating
AR Coating TECHSPEC® l/10 Plate Beamsplitters
Diameter
(mm)
30R/70T 50R/50T 70R/30T
Price
1-5 6-25 26+
25.0 #34-412 #34-413 #34-414 £144.50 £110.50
Call
50.0 #34-415 #34-416 #34-417 £202.30 £153.00
Separation
Non-Polarizing VIS Non-Polarizing NIR Polarizing 632.8nm
Stock No. Price Stock No. Price Stock No. Price
10.0mm 10mm #47-188 £446.25 #47-540 £446.25 #47-190 £535.50
20.0mm 20mm #47-189 £535.50 #47-541 £535.50 #47-191 £535.50
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Lateral Displacement Beamsplitters
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