库存数量:
产品介绍:提供太赫兹频段的信号衰减器,覆盖3THz或更高
太赫兹衰减器
The variable wheel attenuator consists of 5 wheels. Four wheels contain metalized wedged silicon wafers with different attenuation levels and one wheel is empty. If necessary the empty wheel can be filled with a custom element (e.g. filter). Four attenuators have transmission 30%, 10%, 3%, and 1%. These attenuator elements can be used as a single attenuator or in combination that allows achieving different levels of attenuation.
Transmission curves (noise is smoothed) of attenuator elements are shown below. Measurements were made up to 1000 μm. However, operating wavelength range is much wider. It follows from physical mechanism of attenuator operation.
Fig. Transmission of THz attenuator elements
Transmission values of different combinations of attenuators are given in the table below.
Combination of attenuator elements | Normal value of tranmission, % |
30+10 | 3 |
30+3 | 0.9 |
30+1 | 0.3 |
10+3 | 0.3 |
10+1 | 0.1 |
3+1 | 0.03 |
30+10+3 | 0.09 |
30+10+1 | 0.03 |
10+3+1 | 0.003 |
30+3+1 | 0.009 |
30+10+3+1 | 0.0009 |
Common specification:
Operating wavelenth range, μm | 40 ÷ >1000 |
Quality of wheels in the mount, pcs. | 5 |
Quality of attenuation grades, pcs. | 4 |
Transmission tolerance of attenuator element, % of nomanal value | +/- 10 |
Damage threshold, W/cm2 | several hundreds |
The following THz attenuators are available from stock:
No. | Clear aperture, mm |
1 | 25.4 |
2 | 50.8 |