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THz探测器
THz - Single Element - Detectors
| THz 10 | THz 20 | THz 30 | ||
| 孔径 | 10 mm | 20 mm | 30 mm | |
| thermal time constant | 50 ms | 50 ms | 50 ms | |
| max. power density | 15 mW/cm² | 15 mW/cm² | 15 mW/cm² | |
| typ. current sensitivity | 0.5 .. 1 µA/W | 0.5 .. 1 µA/W | 0.5 .. 1 µA/W | |
| rise time* | 100 µs | 700 µs | 2 ms | |
| chopper rate | >500 Hz | 200 Hz | 80 Hz | |
| * only the detector | ||||
This figure shows the sensitivity of the pyroelectric detectors normalized with
the sensitivity at 1 THz. Between 200 and 500 µm the sensitivity changes within 2 %.
THz - Trap - Detector
| Trap | |
| 孔径 | 20 mm |
| thermal time constant | 50 ms |
| max. power | 50 mW |
| typ. current sensitivity | 0.5 .. 1 µA/W |
| rise time* | < 2 ms |
| chopper rate | 8 - 50 Hz |
| * only the detector |
Total reflectivity (loss) for a 3 element trap, left modelled
ａnd right calculated from measured data for one detector.
最小可探测功率和的遮光频率取决于放大器和探测器的参数:
| Bandwidth of the Amplifier | min. detectable power | max. chopper frequency |
| 17 Hz | 15 µW | 10 Hz |
| 40 Hz | 25 µW | 25 Hz |
| 70 Hz | 100 µW | 50 Hz |
Current-Preamplifier CPA（放大器）
结合探测器和前置放大器的灵敏度是由乘法当前探测器的灵敏度和电流放大器的放大(例如探测器10 - 6 A / W和CPA 109 V /A导致总灵敏度:10-6A / W * 109 V / A = 1000 V/ W)。放大设置可以通过一个开关。
规格参数;
·电源:±15 V
·输入连接器:SMA或BNC
·输出连接器:BNC
·电源连接器:Lemo
放大器可以设置由四步开关:例如107…1010 V /A;带宽是固定的*20Hz或200 Hz。检测极限取决于放大，带宽和探测器直径。
更多资料下载：
THz-2017-pdf-922903.pdf
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