In the experiment, a sample was scanned on an X-Z 2-D translation stage, and the THz intensity information of the sample was picked up by a pyroelectric detector for imaging with a computer.

• 实验过程中把样品放在X-Z二维电控平移台上进行扫描成像，透过样品的太赫兹波强度信息由热释电探测器接收，然后经过电脑成像。