THz Beam Splitters

Download THz Beam Splitters Datasheet (PDF, 124 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;

single_pass_beam_splitter

- multi-pass beam splitter for interferometer scheme where beam passes throughsplitter several times.

multi_pass_beam_splitter

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.

HRFZ-Si transmission and reflection

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:

Material HRFZ-Si
Type plano-plano
Available sizes, mm to 150
Diameter or cross-cut tolerance,mm +0.0 /-0.1
Thickness tolerance, mm  +/0.1
Clear apperture, % >=90
Parallelism, arc. min 3
Surface quality (two-sided polishing), scr/dig 60/40
Surface accuracy, mm +/-0.01 deviation from ideal plane
 


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.

THz Beam Splitters

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:

No. Diameter Thickness
mm mm
1 40x30 3.5
2 50.8 3.5

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