THz Beam Splitters | Download THz Beam Splitters Datasheet (PDF, 84 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: | MaterialHRFZ-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. Commom specification: | MaterialHRFZ-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 | 
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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.
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