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(shù):
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(jié)合探測器和前置放大器的靈敏度是由乘法當(dāng)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(dǎo)致總靈敏度:10-6A / W * 109 V / A = 1000 V/ W)。放大設(shè)置可以通過一個開關(guān)。
規(guī)格參數(shù);
·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(shè)置由四步開關(guān):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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