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VBS
Wavelength range
S-Polarization Transmittance (θ=0°)
Material
Laser Damage Threshold *
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With a variable beamsplitter, the incident angle of a laser can be changed. The (R:T) ratios can also be modified. This is commonly used to adjust the light intensity of the laser without a variable adjustment of the light intensity or the laser to be stabilized.

◦The variable beamsplitter has a dielectric multilayer coating which has excellent durability and light resistance.
◦The beam shift caused by the tilt of the beamsplitter can be removed by using a correcting plate. (See how to use)
◦It can be used for arbitrary polarization. However, the transmittance characteristic depends on the polarization.

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Technical Data
Documents/Downloads
Guide

▶Different size, wavelength and deviation not mentioned on-line or in our catalog are available as custom product upon on request.
W3802
▶We offer the most comprehensive range of beamsplitter holders and stages to select from. Let us know the angle of your choice.
▶This variable attenuator (model SVAB) can be used in a system and is available.
▶Please refer to here for Wavelength Characteristic Data (Reference Data, EXCEL file format).

Attention

▶When using with high power laser, make sure to execute at the end edge of the reflected light.
▶The reflectance properties of the optics may change in a high temperature environment.
▶When adjusting the transmittance, the incident angle may change and cause the light path to shift. To correct this, please use the light path corrector (model WSQNA/WBNA)
▶For a large beam size of 30mm diameter or larger and used it at a high inclination level, the beam can be cut at the reflected area.
▶For “P” polarization use, make sure that the incident angle is at 45 degrees or more.

Common Specifications
MaterialBK7 , Synthetic fused silica
Surface flatnessλ
Parallelism<5″
CoatingFront surface ; Dielectric multilayer coating
Rear surfaces ; Multilayer antireflection coating
Surface Quality (Scratch-Dig)10−5
Clear apertureCircle that inscribed in a square of 90% of the dimensions
Effective beam incident diameterEllipsoidal 30×43mm (Angle of inclinaison)
Outline Drawing

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Schematic

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Sample of use

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The variable beam splitter can be used individually. When modifying the incident angle, optics thickness and its refractive properties, a shift may occur in the light path. To reduce this shift, we highly recommend a light path corrector. Please see image below.

◦Place the variable beamsplitter onto a rotation stage to allow an angle adjustment.
◦Install the light path corrector onto a rotating stage.
◦Position the light path corrector at a similar angle with the variable beamsplitter on an opposite side.
◦If the reflected light of the variable beamsplitter is not used, make sure to place a light cut-off material or a beam diffuser at the edge-end of the light.
◦The power of the reflected light from the light path corrector must be cut off at the edge-end of the light.

For part structure, please contact our International Sales Division.
Typical Transmittance Data
■VBS-266 / WSQNA-266

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T: Transmission (S-polarization)
■VBS-355 / WSQNA-355

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T: Transmission (S-polarization)
■VBS-532 / WBNA-532

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T: Transmission (S-polarization)
■VBS-1064 / WBNA-1064

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T: Transmission (S-polarization)

Part Number

Catalog PDF

dxf

STP

IGS

SAT

Zemax

VBS-50S03-1-266

VBS-50S03-1-355

VBS-50S03-1-532

VBS-50S03-1-1064

Spec
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Part Number
Add to cart Cart
    JP Yen Stock Qty
VBS-50S03-1-266
VBS-50S03-1-355
VBS-50S03-1-532
VBS-50S03-1-1064

266nm

>90%

<5%

Synthetic fused silica

1J/cm2

355nm

>93%

<5%

Synthetic fused silica

1J/cm2

532nm

>95%

<5%

BK7

2.5J/cm2

1064nm

>95%

<5%

BK7

3.5J/cm2

RoHS  

¥43,800

LOW
RoHS  

¥43,800

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US
RoHS  

¥40,950

LOW
RoHS  

¥40,950

LOW