Tsubouchi Masaaki, Nagashima Keisuke
Opt Express. 2020 Jun 8;28(12):17820-17831. doi: 10.1364/OE.394312.
We develop a high-speed two-dimensional (2D) terahertz (THz) color imaging system for practical applications. This system performs THz time-domain spectroscopy (THz-TDS) measurements in one-dimensional (1D) space simultaneously to reduce the spatial scan from 2D to 1D and obtains the 2D THz color image in which the spectral data is possessed in each pixel. We realize measurements on the image with 750 × 1000 pixels (13 mm × 25 mm) with the spatial resolution of 1.5 mm within 10 seconds. This is two orders of magnitude faster than conventional THz color imaging methods. High-speed 2D THz color imaging will be used in non-destructive and non-invasive inspections of industrial products and biological tissues in the future.
我们开发了一种用于实际应用的高速二维（2D）太赫兹（THz）彩色成像系统。该系统在一维（1D）空间中同时执行太赫兹时域光谱（THz-TDS）测量，以将空间扫描从二维减少到一维，并获得每个像素都包含光谱数据的二维太赫兹彩色图像。我们在10秒内实现了对750×1000像素（13毫米×25毫米）图像的测量，空间分辨率为1.5毫米。这比传统的太赫兹彩色成像方法快两个数量级。高速二维太赫兹彩色成像未来将用于工业产品和生物组织的无损和非侵入性检测。
