We demonstrate coherent three-dimensional terahertz imaging by frequency modulation of a quantum cascade laser in a compact and experimentally simple self-mixing scheme. Through this approach, we can realize significantly faster acquisition rates compared to previous schemes employing longitudinal mechanical scanning of a sample. We achieve a depth resolution of better than 0.1 mu m with a power noise spectral density below -50 dB/Hz, for a sampling time of 10 ms/pixel. (C) 2015 Optical Society of America
展开▼
机译：我们通过紧凑和实验简单的自混合方案中的量子级联激光器的频率调制演示了相干三维太赫兹成像。通过这种方法，与以前采用样本纵向机械扫描的方案相比，我们可以实现更快的采集速度。对于10 ms /像素的采样时间，我们获得了优于0.1微米的深度分辨率和低于-50 dB / Hz的功率噪声频谱密度。 （C）2015年美国眼镜学会
展开▼
