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Download THz Beam nSplitters Datasheet (PDF, 46 KB)
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We offer THz beam splitters of 2 types:
- single-pass beam nsplitter. It is used in optical schemes where radiation passes through beam nsplitter one time;
- multi-pass beam splitter for interferometer scheme where nbeam passes throughsplitter several times.
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The material of THz beam splitter is HRFZ-Si. These beam nsplitters provide transmittance/reflectance ratio about 54/46 (%) in the wide nwavelength range without any coating.
Reflection and transmission curves are nshown below.
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Fig.1 HRFZ-Si transmission and reflection (sample thickness n- 5 mm).
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1. Single-pass THz Beam Splitter
The nspecification for the single-pass beam splitter is the same as for a HRFZ-Si nwindow. In fact plano-plano HRFZ-Si window could be used as single-pass beam nsplitter.
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Commom specification:
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Material
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HRFZ-Si
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Type
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plano-plano
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Available sizes, mm
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to 150
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Diameter or ncross-cut tolerance,mm
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+0.0 /-0.1
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Thickness tolerance, mm
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+/0.1
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Clear apperture, %
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>=90
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Parallelism, arc. min
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3
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Surface quality (two-sided npolishing), scr/dig
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60/40
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Surface accuracy, mm
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+/-0.01 deviation from ideal nplane
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??/p>n
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The finished parts of different dimensions are available nfrom stock and supplied within a week.
Please check the Optics stock. n
Custom sizes are manufactured upon request.
For price quotation and ndelivery please fill in our Request nform.
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2. Multi-pass THz Beam Splitter n
The multi-pass beam splitter (for interferometers) as opposed to a nsingle-pass beam splitter should be produced with a high accuracy.
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Commom specification:
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Material
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HRFZ-Si
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Type
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plano-plano
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Available sizes, mm
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to 150
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Diameter or ncross-cut tolerance,mm
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+0.0 /-0.1
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Thickness tolerance, mm
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+/-0.01
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Clear apperture, %
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>=90
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Parallelism, arc. sec
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5
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Surface quality (two-sided npolishing),
scr/dig
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60/40
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Surface accuracy, ??633 nnm
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1
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The following multi-pass THz beam splitters are available from nstock:
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No.
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Diameter
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Thickness
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mm
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mm
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1
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40x30
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3.5
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2
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50.8
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3.5
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