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Ultrathin Beamsplitter Plates

Ultrathin Beamsplitter Plate has a very thin thickness such that it can minimize any beam displacement or chromatic dispersion in any optical system. Even though the glass sheet is extremely thin, it is still able to maintain its reflection and transmission capability, similar to conventional beamsplitter plate.


BK7 is the most common optical glass used in high-quality optical components as it is a hard glass that can withstand a variety of physical and chemical exposure. Relatively scratch and chemical resistant, it has a low bubble and inclusion content, therefore making it an ideal choice for precision lenses. It is the ideal choice for general purpose visual and NIR applications as it has excellent transmission.


General Specifications

Material

BK 7

Type

Ultra Thin Beamsplitter Plates

Diameter(mm)

20

Thickness(mm)

0.3

Diameter Tolerance(mm)

±0.2

Thickness Tolerance(mm)

±0.05

Surface Quality

40/20

Clear Aperture

18mm

Transmitted Wavefront Distortion

<λ/10@633nm

Parallelism(arcmin)

<5

Angle of Incidence(degree)

45

Beam Displacement(mm)

0.1

Split Ratio

50:50±5%

Damage Threshold(pulsed)

1J/cm²(20ns 20Hz 1064nm)



      


           




Notes:

Wavelength (nm)

Diameter (mm)


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Compare Model Drawings & Specs Clear Aperture Thickness (mm) Wavelength (nm) Diameter (mm) Mount Diameter Availability Price
BK7-UTBP-20-0.3-45-400-700-M
BK7, Ultra Thin Beamsplitter Plate, Ø=20mm, Thickness=0.3mm, AR Coating: R<0.5% @ 400-700nmnm, Split Ratio: 50:50
18mm0.3400-7002025.4±0.2mm In Stock $198.00
BK7-UTBSP-20-0.3-650-900-M
BK7, Ultra Thin Beamsplitter Plate, Ø=20mm, Thickness=0.3mm, AR Coating: R<0.5% @ 650-900nmnm, Split Ratio: 50:50
18mm0.3650-9002025.4±0.2mm In Stock $198.00
BK7-UTBSP-20-0.3-900-1200-M
BK7, Ultra Thin Beamsplitter Plate, Ø=20mm, Thickness=0.3mm, AR Coating: R<0.5% @ 900-1200nmnm, Split Ratio: 50:50
18mm0.3900-12002025.4±0.2mm In Stock $198.00

BK7-UTBSP-20-0.3-900-1200-M - Parameter

Type
Ultra Thin Beamsplitter Plate

Material
BK7

Coating
R<0.5% @ 900-1200nm

Diameter (mm)
20

Wavelength (nm)
900-1200

Diameter Tolerance (mm)
± 0.2

Thickness Tolerance (mm)
± 0.05

Surface Quality
40/20

Clear Aperture
18mm

Damage Threshold (pulsed)
>1J/cm²(20ns 20Hz @1064nm)

Thickness (mm)
0.3

Parallelism (arcmin)
<5

Angle of Incidence (degree)
45

Flatness
<λ/10@633nm

Transmitted Wavefront Distortion
<λ/10@632.8nm

Split Ratio
50:50±5%

Polarization
T=(Ts+Tp)/2 R=(Rs+Rp)/2

Mount Diameter
25.4±0.2mm

Mount Thickness
6.0±0.2mm

BK7-UTBSP-20-0.3-650-900-M - Parameter

Type
Ultra Thin Beamsplitter Plate

Material
BK7

Coating
R<0.5% @ 650-900nm

Diameter (mm)
20

Wavelength (nm)
650-900

Diameter Tolerance (mm)
± 0.2

Thickness Tolerance (mm)
± 0.05

Surface Quality
40/20

Clear Aperture
18mm

Damage Threshold (pulsed)
>1J/cm²(20ns 20Hz @1064nm)

Thickness (mm)
0.3

Parallelism (arcmin)
<5

Angle of Incidence (degree)
45

Flatness
<λ/10@633nm

Transmitted Wavefront Distortion
<λ/10@632.8nm

Split Ratio
50:50±5%

Polarization
T=(Ts+Tp)/2 R=(Rs+Rp)/2

Mount Diameter
25.4±0.2mm

Mount Thickness
6.0±0.2mm

BK7-UTBP-20-0.3-45-400-700-M - Parameter

Type
Ultra Thin Beamsplitter Plate

Material
BK7

Coating
R<0.5% @ 400-700nm

Diameter (mm)
20

Wavelength (nm)
400-700

Diameter Tolerance (mm)
± 0.2

Thickness Tolerance (mm)
± 0.05

Surface Quality
40/20

Clear Aperture
18mm

Damage Threshold (pulsed)
>1J/cm²(20ns 20Hz @1064nm)

Thickness (mm)
0.3

Parallelism (arcmin)
<5

Angle of Incidence (degree)
45

Flatness
<λ/10@633nm

Transmitted Wavefront Distortion
<λ/10@632.8nm

Split Ratio
50:50±5%

Polarization
T=(Ts+Tp)/2 R=(Rs+Rp)/2

Mount Diameter
25.4±0.2mm

Mount Thickness
6.0±0.2mm

BK7-UTBSP-20-0.3-900-1200-M - Download

BK7-UTBSP-20-0.3-650-900-M - Download

BK7-UTBP-20-0.3-45-400-700-M - Download

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