THz beam expanders are meant to expand or converge parallel THz beams. Two-lens Galilean THz expanders provide low level of aberrations. They are diffraction-limited systems that decrease the influence of beam divergence. Beam expansion allows focusing THz radiation into a diffraction-limited focal spot. Thus maximum radiation power density can be achieved.
|
Expansion (convergence) ratios |
х2 |
х5 |
х10 |
|
Lens material |
HRFZ-Si |
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|
Operating range, μm |
50 - 8000 (6 THz - 37 GHz) |
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|
Maximum input beam diameter, mm |
72 |
28,8 |
14,4 |
|
Overall transmittance |
65%* |
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|
Wavefront distortion @50 μm |
0,03λ |
0,06λ |
0,04λ |
|
Dimensions, mm |
156х156х186 |
166х154х203 |
166х154х257 |
THz Beam Expanders
THz beam expanders can be used with both continuous and pulsed radiation sources. Due to large entrance and exit apertures our expanders can be used with various input beam diameters.
THz antireflection coating can be applies to the lenses of the expander per the required operation wavelength range.
THz antireflection coating can be applies to the lenses of the expander per the required operation wavelength range.
