Download THz Beam Splitters Datasheet (PDF, 46 KB)

We offer THz beam splitters of 2 types:
- single-pass beam splitter. It is used in optical schemes where radiation passes through beam splitter one time;
- multi-pass beam splitter for interferometer scheme where beam passes throughsplitter several times.

The material of THz beam splitter is HRFZ-Si. These beam splitters provide transmittance/reflectance ratio about 54/46 (%) in the wide wavelength range without any coating.
Reflection and transmission curves are shown below.

Fig.1 HRFZ-Si transmission and reflection (sample thickness - 5 mm).

1. Single-pass THz Beam Splitter 
The specification for the single-pass beam splitter is the same as for a HRFZ-Si window. In fact plano-plano HRFZ-Si window could be used as single-pass beam splitter.

Commom specification:

The finished parts of different dimensions are available from stock and supplied within a week.
Please check the Optics stock.
Custom sizes are manufactured upon request.
For price quotation and delivery please fill in our Request form. 

2. Multi-pass THz Beam Splitter
The multi-pass beam splitter (for interferometers) as opposed to a single-pass beam splitter should be produced with a high accuracy.

Commom specification:

Material HRFZ-Si Type plano-plano Available sizes, mm to 150 Diameter or cross-cut tolerance,mm +0.0 /-0.1 Thickness tolerance, mm  +/-0.01 Clear apperture, % >=90 Parallelism, arc. sec 5 Surface quality (two-sided polishing), scr/dig 60/40 Surface accuracy, λ@633 nm 1

The following multi-pass THz beam splitters are available from stock:

Please check the Optics stock.  Custom sizes are manufactured upon request.
For price quotation and delivery please fill in our Request form.