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Coherent Detection for Continuous Terahertz Wave

机译：连续太赫兹波的相干检测

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摘要

In this paper we demonstrated a coherent raster-scan imaging system that can acquire phase information based on continuous terahertz imaging. It mixes the terahertz with a Fs-laser by a electro-optic crystal of ZnTe to make a hybrid modulation on the crystal to achieve continuous terahertz detection. In this way, it can not only propagate for a long distance but also achieve phase detection for continuous terahertz imaging. The surface images of objects that are under test can be obtained by the Backward-Wave Oscillator, which the output power is 10mW at 205.994GHz. With the repetition frequency of 80MHz, the output power of the MaiTai is 1.65W and 100fs pulse light at 800nm. The images can achieve diffraction-limited resolution approximately. And the simulated results show that the system can obtain phase imaging of test objects based on continuous terahertz source. The way to get the phase of the signal has significant meaning for coherent detection of continuous terahertz source.
机译：在本文中，我们展示了一种相干光栅扫描成像系统，该系统可以基于连续的太赫兹成像来获取相位信息。它通过ZnTe电光晶体将太赫兹与Fs激光器混合，对晶体进行混合调制，从而实现连续的太赫兹检测。这样，它不仅可以传播很远的距离，而且可以实现连续太赫兹成像的相位检测。待测物体的表面图像可以通过后向波振荡器获得，在205.994GHz时输出功率为10mW。重复频率为80MHz，MaiTai的输出功率为1.65W，在800nm处有100fs的脉冲光。图像可以大约达到衍射极限分辨率。仿真结果表明，该系统可以基于连续的太赫兹源获得测试对象的相位成像。获得信号相位的方法对于连续太赫兹源的相干检测具有重要意义。

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  • 来源
  • 会议地点 San Diego CA(US)
  • 作者

    Yuan Hui; Lu Tielin; Zhang Jingshui; Zhang Liangliang; Zhao Ji; Zhao Yuejin;

  • 作者单位

    Beijing Key Lab for Precision Optoelectronic Measurement Instrument and Technology, School of Optoelectronics, Beijing Institute of Technology, Beijing 100081, China;

    Beijing Key Lab for Precision Optoelectronic Measurement Instrument and Technology, School of Optoelectronics, Beijing Institute of Technology, Beijing 100081, China;

    Beijing Key Lab for Precision Optoelectronic Measurement Instrument and Technology, School of Optoelectronics, Beijing Institute of Technology, Beijing 100081, China;

    Key laboratory of Terahertz Optoelectronics, Ministry of Education of China, Beijing Key Laboratory for Terahertz Spectroscopy and Imaging, Department of Physics, Capital Normal University, Beijing 100048,China;

    Key laboratory of Terahertz Optoelectronics, Ministry of Education of China, Beijing Key Laboratory for Terahertz Spectroscopy and Imaging, Department of Physics, Capital Normal University, Beijing 100048,China;

    Beijing Key Lab for Precision Optoelectronic Measurement Instrument and Technology, School of Optoelectronics, Beijing Institute of Technology, Beijing 100081, China;

  • 会议组织
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Continue terahertz wave; Fs-laser; Electro-optic effect; Coherent detection;

    机译：继续太赫兹波； Fs激光；电光效应相干检测;

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