Dichroic Optics

Dichroic Optics Glass-Beam-Combiner

Dichroic Optics Glass-Beam-Combiner

Product TypePart NumberDimension (mm)Wavelength (nm)MaterialThickness (mm)
Beam CombinerBCBK-0.5-2-1064T650R12.71064T/650RN-BK72.0
Beam CombinerBCBK-0.5-2-808T1064R12.7808T/1064RN-BK72.0
Beam CombinerBCBK-0.5-3-1064T808R12.71064T/808RN-BK73.0
Beam CombinerBCBK-0.75-3-1064T650R19.11064T/650RN-BK73.0
Beam CombinerBCF-25-3-355T1064R25.0355T/1064RFused Silica3.5
Beam CombinerBCF-1-3.2-355T650R25.4355T/650RFused Silica3.2
Beam CombinerBCBK-1-3-532T650R25.4532T/650RN-BK73.0
Beam CombinerBCBK-1-3.5-650T1064R25.4650T/1064RN-BK73.5
Beam CombinerBCBK-1-3-1064T650R25.41064T/650RN-BK73.0
Beam CombinerBCBK-1.1-3-1064T650R27.91064T/650RN-BK73.0
Beam CombinerBCF-30-3-355T650R30.0355T/650RFused Silica3.0
Beam CombinerBCBK-1.5-3-532T650R38.1532T/650RN-BK73.0
Beam CombinerBCF-40-3-355T650R40.0355T/650RFused Silica3.0
Beam CombinerBCF-50-5-355T650R50.0355T/650RFused Silica5.0
Beam CombinerBCF-50-5-650T266R50.0650T/266RFused Silica5.0
Beam CombinerBCF-50-5-650T355R50.0650T/355RFused Silica5.0
Beam CombinerBCBK-50-5-650T532R50.0650T/532RN-BK75.0
Beam CombinerBCBK-2-5-1064T650R50.81064T/650RN-BK75.0
Beam CombinerBCBK-2-6.35-650T1064R50.8650T/1064RN-BK76.4
Beam CombinerBCBK-25x20x3-808T1064R25.0 x 20.0808T/1064RN-BK73.0
Beam CombinerBCF-30x50x5-650T355R30.0 x 50.0650T/355RFused Silica5.0
Beam CombinerBCBK-30×50-650T1550R30.0 x 50.0650T/1550RN-BK75.0
Beam CombinerBCBK-120x90x2.5-1064T650R120.0 x 90.01064T/650RN-BK72.5
Beam CombinerBCBK-90x56x3-1064T650R90.0 x 56.01064T/650RN-BK73.0
Beam CombinerBCBK-100x100x4-1064T650R100.0 x 100.01064T/650RN-BK74.0
Beam CombinerBCBK-90-3-1064T650R90.0 1064T/650RN-BK73.0
Beam CombinerBCBK-120-3-1064T650R120.01064T/650RN-BK73.0
Beam CombinerBCBK-120x90x2.5-1064R650T120.0 x 90.0650T/1064RN-BK72.5

Beam Combiner is made by N-BK7 (BCBK) or Fused Silica (BCF). It merges two or more beams into one and is used for system alignment. It usually transmits a long-wavelength beam and reflects a short-wavelength beam whereas Reverse Beam Combiner transmits a short-wavelength beam and reflects a long-wavelength beam. Various Beam Combiner can transmit or reflects two or more wavelength beams.

CO2-Laser Optics Beam-Combiner

Product TypePart NumberWavelength (nm)Dia (mm)ET (mm)Material
Beam CombinerBCZ-0.5-310600T / 650R12.73.0ZnSe
Beam CombinerBCZ-0.75-310600T / 650R19.13.0ZnSe
Beam CombinerBCZ-20-210600T / 650R20.02.0ZnSe
Beam CombinerBCZ-1.5-310600T / 650R38.13.0ZnSe
Beam CombinerBCZ-2-510600T / 650R50.85.0ZnSe

BCZ-Series represents ZnSe Beam Combiners that Wavelength Opto-Electronics offers to our customers. It is used for CO2 laser system alignment. It is designed at a 45° angle of incidence, it transmits a CO2 laser beam and combines the beam with the 90° reflected visible alignment beam.

Diameter Tolerance:
Thickness: ±0.25mm
Surface Flatness: λ/4 per 1″Dia@632.8nm
Surface Quality: 40-20 S-D
AOI: 45°


Product TypePart NumberWavelength (nm)Dia (mm)MaterialET (mm)Side 1 Reflectivity (%R)Polarization
Beam SplitterBSZ-0.5-3-10%R-PIS10600/940012.7ZnSe3.010%Insensitive
Beam SplitterBSZ-1-3-27%R-PIS10600/940025.4ZnSe3.027%Insensitive
Beam SplitterBSZ-1-3-50%R-PIS10600/940025.4ZnSe3.050%Insensitive
Beam SplitterBSZ-1.5-3-50%R-PIS10600/940038.1ZnSe3.050%Insensitive
Beam SplitterBSZ-2-5-50%R-PIS10600/940050.8ZnSe5.050%Insensitive

A beamsplitter splits input light into two, one part is transmitted while the other is reflected. The transmission and reflection of the light depends upon various parameters such as the incident angle, state of polarization, and wavelength of the input beam. Our company is capable of making Zinc Selenide beamsplitters (i.e., for CO2 optics) at 9.4µm and 10.6µm wavelengths. There is a substantial difference in the transmittance and reflectance values of s and p polarization at a 45° incident angle, so the beamsplitters designed here are for this angle.

Diameter Tolerance:
Thickness: ±0.25mm
Surface Flatness: λ/4 per 1’’ Dia@632.8nm
Surface Quality: 60-40 S-D

Polarization Optics Beam Splitter

Polarizing Beam Splitter (Plate & Cube)

Part NumberWavelength(nm)MaterialDiameter(mm)Thickness (mm)Angle of Incidence (°)
BSPP-266-45-1266Fused Silica25.46.3545
BSPP-266-45-2266Fused Silica50.86.3545
BSPP-355-45-1355Fused Silica25.46.3545
BSPP-355-45-2355Fused Silica50.86.3545
BSPP-532-45-1532Fused Silica25.46.3545
BSPP-532-45-2532Fused Silica50.86.3545
BSPP-980-45-1980Fused Silica25.46.3545
BSPP-980-45-2980Fused Silica50.86.3545
BSPP-1064-45-11064Fused Silica25.46.3545
BSPP-1064-45-21064Fused Silica50.86.3545
BSPP-1550-45-11550Fused Silica25.46.3545
BSPP-1550-45-21550Fused Silica50.86.3545
BSPP-266-B-1266Fused Silica25.46.35Brewster’s
BSPP-266-B-2266Fused Silica50.86.35Brewster’s
BSPP-355-B-1355Fused Silica25.46.35Brewster’s
BSPP-355-B-2355Fused Silica50.86.35Brewster’s
BSPC-UV-FS-1200-400Fused Silica25.4 x 25.4 x 25.4
BSPC-UV-FS-2200-400Fused Silica50.8 x 50.8 x 50.8
BSPC-VIS-FS-1400-700Fused Silica25.4 x 25.4 x 25.4
BSPC-VIS-FS-2400-700Fused Silica50.8 x 50.8 x 50.8
BSPC-NIR-FS-1750-1100Fused Silica25.4 x 25.4 x 25.4
BSPC-NIR-FS-2750-1100Fused Silica50.8 x 50.8 x 50.8

Plate Beam Splitter Polarizers Diagram Plate Beam Splitter Polarizers Diagram 2

Description (Plate Beam Splitter Polarizer – BSPP)

BSPP series polarizers split light into two beams and transmits the p-polarized beam while reflects the s-polarized beam. The 45° angle of incidence makes mounting easier for optics comparing at Brewster’s angle of incidence. Due to the AR coating onto the surface, there is a high damage threshold that makes it useful for high optical power applications. Plate beam splitter polarizers are also used in photonics instrumentation, optical isolation and in many other applications. 

Plate Beam Splitter Polarizers are available with us in several wavelength ranges, desired wavelengths, shapes, sizes plus incidence angles and we can also make customer specifications.

Material: Fused Silica, N-BK7
Wavelength: 380-2100nm (N-BK7) | 200-2100nm (Fused Silica)
Angle Of Incidence: @ 45°, Brewster’s angle
Extinction Ratio: Tp/Ts  > 200:1
Surface Quality: 60/40 scratch and dig
Thickness: 3mm
Dimension: 0.5″, 1″ & 2″
Dimension Tolerance: +0.0/-0.2mm
Thickness Tolerance:  ±0.25mm
Damage Threshold: >5J/cm2, 20ns, 20Hz @ 1064nm

Cube Beam Splitter Polarizers Diagram Cube Beam Splitter Polarizers Diagram 2

Description (Cube Beam Splitter Polarizer – BSPC)

Two right-angled prisms are put together by each hypotenuse respectively with the help of cement or optical contact to form a Cube Beam Splitter Polarizer. When an unpolarized light falls on the cube beam splitter polarizer, it separates input light into two polarization components and reflects the s-component of polarization.  Optical power tolerance is higher when the two prisms of the cube beam splitter are in optical contact thus usable for high power applications.  It is used in applications where the simplified mounting and system integration is an important aspect.  It is also used in the applications for imaging systems.

Our company offers Cube Beam Splitter Polarizer for a wide range of wavelengths (UV-NIR) in different dimensions for optimized performances.  A customized Cube Beam Splitter Polarizer can be manufactured based on our customer requirements.

Material: Fused Silica, N-BK7
Wavelength: 380-2100nm (N-BK7) | 195-2100nm (Fused Silica)
Surface Contact Type: Cemented, Optically Contacted
Extinction Ratio: Tp/Ts  > 1000:1 (Narrow Band) | >100:1/>1000:1 (Broad Band)
Surface Quality: 60/40 scratch and dig | 40/20 scratch and dig
Dimension: 0.5″, 1″ & 2″
Dimension Tolerance: ±0.2mm
Damage Threshold: >500mJ/cm2 | >5J/cm2
Non-Polarizing Beam Splitter (Plate & Cube)
Part NumberWavelength (nm)MaterialDimension (mm)Thickness (mm)Angle of Incidence (°)T/R (%)
BSPN-355-0.5-45351-355Fused Silica12.734550 : 50
BSPN-532-0.5-45515-532N-BK712.734550 : 50
BSPN-633-0.5-45633N-BK712.734550 : 50
BSPN-795-0.5-45780-795N-BK712.734550 : 50
BSPN-1070-0.5-451053-1070N-BK712.734550 : 50
BSPN-355-1-45351-355Fused Silica25.434550 : 50
BSPN-532-1-45515-532N-BK725.434550 : 50
BSPN-633-1-45633N-BK725.434550 : 50
BSPN-795-1-45780-795N-BK725.434550 : 50
BSPN-1070-1-451053-1070N-BK725.434550 : 50
BSPN-355-2-45351-355Fused Silica50.834550 : 50
BSPN-532-2-45515-532N-BK750.834550 : 50
BSPN-633-2-45633N-BK750.834550 : 50
BSPN-795-2-45780-795N-BK750.834550 : 50
BSPN-1070-2-451053-1070N-BK750.834550 : 50
Part NumberWavelength (nm)MaterialDimension (mm)T/R (%)
BSCN-420-700-10420-700N-BK710.050 : 50
BSCN-532-10532N-BK710.050 : 50
BSCN-633-10633N-BK710.050 : 50
BSCN-1200-1600-101200-1600N-BK710.050 : 50
BSCN-420-700-0.5420-700N-BK712.750 : 50
BSCN-532-0.5532N-BK712.750 : 50
BSCN-633-0.5633N-BK712.750 : 50
BSCN-1200-1600-0.51200-1600N-BK712.750 : 50
BSCN-420-700-20420-700N-BK720.050 : 50
BSCN-532-20532N-BK720.050 : 50
BSCN-633-20633N-BK720.050 : 50
BSCN-1200-1600-201200-1600N-BK720.050 : 50
BSCN-420-700-2420-700N-BK725.450 : 50
BSCN-532-2532N-BK725.450 : 50
BSCN-633-2633N-BK725.450 : 50
BSCN-1200-1600-21200-1600N-BK725.450 : 50
Description (Plate Beam Splitter – BSPN)
The common Beam Splitter is used to split the laser beam. The performance of beam splitters is mainly dependent on the coating specifications.
Material: Fused Silica, N-BK7
Dimension Tolerance: +0.0/-0.2mm
Thickness Tolerance: ±0.2mm
Clear Aperture: >90%
Surface Quality: 60/40 scratch and dig 
Flatness: <λ/4 @ 632.8nm
Beam Deviation: <3 arcmin
T/R Tolerance: ±5%
Coating (AOI=45°): Side1 – Non-polarizing beamsplitter coating; Side2 – AR coating
Damage Threshold: >3J/cm2 , 20ns, 20Hz @ 1064nm
Description (Cube Beam Splitter – BSCN)

With non-polarizing beam splitter coating on hypotenuse face, this series of cube beam splitters provide 50:50 split ratio independently on the input beam polarization.

Material: N-BK7
Dimension Tolerance: ±0.2mm
Clear Aperture: >90%
Surface Quality: 60/40 scratch and dig 
Flatness: <λ/4 @ 632.8nm
Beam Deviation: <3 arcmin
T/R Tolerance: ±5%
Coating (AOI=45°): Non-polarizing beamsplitter coating on hypotenuse face and AR coating on all entrances
Damage Threshold: >100mJ/cm2 , 20ns, 20Hz @ 1064nm

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