THz功率计 太赫兹功率计
太赫兹能量测试系统
Absolute Terahertz Power/Energy Meter

A new USB version of our successful absolute power meter support unit is now available, with continuous FFT display of noise and dynamic as well as digital readout of power levels.

特点

• 测量自由空间光束
• 在电脑上功率显示
• 通过软件控制全自动能量校正
• 频率相关窗口损失校正
• 精确度好于10%
• NEP 典型值 5μW/Hz1/2
• NEJ 1uJ
• 带宽: 30GHz to 3THz 以上
• 窗口有效面积直径大于30mm

太赫兹功率测量探头

The head is a photo-acoustic detector using a closed air-cell and a pressure transducer. Calibration is provided by ohmic heating of a thin metal film within the cell.

太赫兹表头

The support unit is based around a National Instruments USB-6211 data acquisition module. Additional electronics have been added to provide film heating for calibration and to amplify the signal from the head's microphone pressure sensor. The compiled software, written in LabVIEW, implements a lock-in amplifier and displays the microwave power.