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Beamsplitter Plates

issue date:2016-3-31 15:35:44 visit frequency:1673

Beamsplitter Plates

The beamsplitter plate is a thin optical glass plate. The first face is coated with an all-dielectric thin film having partial reflection properties. The second surface is multilayer AR coated for 45 degree or some other specified incident angle. This beamsplitter may also be designed for low absporption and high damage threshold, suitable for high energy laser applications.

 

We provide various plates, distinguished by the polarization of the incoming and outgoing beams. Unpolarized beamsplitter plates, generate partially polarized outgoing beams for randomly polarized incoming light. Polarized plates generate both s-polarized and p-polarized beams from randomly polarized incoming light. For non-polarizing BS plates, the polarization of the outgoing beams remains the same when the incoming beam is 45 degree linearly polarized or circularly polarized.


Specification

Material

N-BK7 grade A optical glass

Dimension Tolerance

±0.2mm

Thickness Tolerance

±0.2mm

Flatness

λ/8 @ 632.8 nm

Surface Quality

40/20 scratch and dig

Parallelism

<1 arc minute 

T/R

50/50±5%, for random polarization 

T=(Ts+Tp)/2, R=(Rs+Rp)/2 

Coatings

(Incidence angle: 45 degree

S1: partial reflection coating

S2: Anti Reflection coating 

Standard Coating Wavelength

Narrow Band: 488, 532, 632.8, 650, 808,

 850, 980, 1064, 1310, 1550 nm 

Broadband: 450-650, 650-900, 900-1200,

1200-1550, 1500-1610 nm


Size(mm)

Narrow Band

Broadband

Part No.

Part No.

10x10x2

BP303

BP403

12.7x12.7x2

BP304

BP404

25.4x25.4x2

BP305

BP405

ф25.4x2

BP306

BP406