N BK7 Optical Beam Splitters Cube 10-5 Scratch Dig Laser Line
Optical glass N-BK7 5-50mm Laser Line Non-Polarizing Cube Beamsplitters
- AR Coated <0.25% on Entrance and Exit Faces
- Nd:YAG and HeNe Options
non-polarizing beamsplitter cubes are offered here with broadband AR and beamsplitter coatings designed for 700 - 1100 nm. These cubes provide a 10:90, 30:70, 50:50, 70:30, or 90:10 beamsplitting ratio with a minimal dependence on the polarization of the incident light (see the tables below for the polarization split ratio tolerances).
Each cube is fabricated from N-BK7 and designed for minimal beam offset. A single reflecting surface also avoids ghost images. The dielectric beamsplitter coating is applied to the hypotenuse of one of the two prisms that make up the cube. Then, cement is used to bind the two prism halves together. These cubes are engraved with arrows that indicate the direction in which the beam is incident on the beamsplitter coating layer, as shown in the diagram to the right. Although light can enter through any of the other AR-coated surfaces, specifications are guaranteed when light is first incident on the side of the beamsplitter coating; see the diagram to the right.
Attention
▶When applying laser linear polarized light, the direction of polarization may affect the amount of reflectance and transmittance. For a divergence usage of 1:1 ratio, ensure the direction of polarization is set to 45 degrees or use a circular polarizer.
▶When a laser light transmits through the optics, the light path may shift by a few millimeters horizontally due to refraction and the thickness of the wedge plate.
▶The transmittance wavelength properties may be different if the incident angle is other than 45 degrees.
▶Please check the arrow mark on the side of the wedge plate that indicates the coated surface.
▶The phase difference of incident light cannot be preserved on light transmittance and reflectance; Please use a wave plate to compensate.
Common Specifications
| Material | N-BK7 |
| Dimension Tolerance | +0.0/-0.2mm |
| Thickness Tolerance | ±0.2mm |
| Surface Quality | 60/40 |
| Clear Aperture | >90% |
| Flatness | <λ/4@633nm per 25mm |
| Parallelism | <1 arc minute |
| Chamfer | Protected<0.5mmx45° |
| T/R Tolerance | ±5%, T=(Ts+Tp)/2, R=(Rs+Rp)/2 |
| Coating(AOI=45°) | S1: Partial reflectance coating S2: AR coating |
| Damage Threshold | >1J/cm2, 20ns, 20Hz, @1064nm |
Packing Details :Use Good and Strong Cartons to pack
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FAQ
Q: What are your main products?
A: Optical lens,mirrors,windows,filters,prisms
Q: How long is your delivery time?
A: In general delivery time is about one month for custom produced optics.except stock ones or some special optics.
Q: Do you provide samples ? is it free or extra ?
A: We can provide free samples if we have stock optics as your request,while custom produced samples are not free.
Q:What is your MOQ ?
MOQ is 10pcs for most of the optics, while MOQ could be only one piece if you need a element in big dimention.
Q: What is your terms of payment ?
T/T,L/C,VISA,Paypal,Alipay or Negotiation.
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