THz探測器
THz - Single Element - Detectors
THz 10 | THz 20 | THz 30 | ||
孔徑 | 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 | |
孔徑 | 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.
最小可探測功率和的遮光頻率取決于放大器和探測器的參數:
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）
結合探測器和前置放大器的靈敏度是由乘法當前探測器的靈敏度和電流放大器的放大(例如探測器10 - 6 A / W和CPA 109 V /A導致總靈敏度:10-6A / W * 109 V / A = 1000 V/ W)。放大設置可以通過一個開關。
規格參數;
·電源:±15 V
·輸入連接器:SMA或BNC
·輸出連接器:BNC
·電源連接器:Lemo
放大器可以設置由四步開關:例如107…1010 V /A;帶寬是固定的*20Hz或200 Hz。檢測極限取決于放大，帶寬和探測器直徑。
更多資料下載：
THz-2017-pdf-922903.pdf
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