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Fast frequency upconversion imaging based on quasi-phase match

机译:基于准相位匹配的快速频率上限成像

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摘要

In this paper, a fast frequency upconversion imaging based on quasi-phase match is proposed. A function based on the quasi phase-match of two acquired images within 3dB width is formulated to evaluate the maximum step size of the nonlinear crystal temperature for each acquisition. The measurement time is reduced by acquiring images at these specific temperatures. The integration time of each frame is reassigned to improve the signal noise ratio of the acquired images. Comparing scanning the object with the total measurement time of 44 minutes for a target area with 1mm diameter, our method reaches 12 minutes with just 6 measurements.
机译:本文提出了一种基于准相位匹配的快速频率上转换成像。 配制基于3DB宽度内的两个获取的图像的准相匹配的功能,以评估每次采集的非线性晶体温度的最大步长。 通过在这些特定温度下获取图像来减少测量时间。 重新分配每个帧的积分时间以提高所获取的图像的信号噪声比。 将扫描物体与直径1mm的目标区域的总测量时间进行比较,我们的方法只有6次测量,我们的方法达到12分钟。

著录项

  • 来源
    《Optical and quantum electronics》 |2021年第8期|413.1-413.12|共12页
  • 作者单位

    Jiangsu Key Laboratory of Spectral Imaging and Intelligence Sense Nanjing University of Science and Technology Nanjing 210094 China;

    Jiangsu Key Laboratory of Spectral Imaging and Intelligence Sense Nanjing University of Science and Technology Nanjing 210094 China;

    Jiangsu Key Laboratory of Spectral Imaging and Intelligence Sense Nanjing University of Science and Technology Nanjing 210094 China School of Geographic and Biologic Information Nanjing University of Posts and Telecommunications Nanjing 210023 China;

    Jiangsu Key Laboratory of Spectral Imaging and Intelligence Sense Nanjing University of Science and Technology Nanjing 210094 China;

    Jiangsu Key Laboratory of Spectral Imaging and Intelligence Sense Nanjing University of Science and Technology Nanjing 210094 China;

    Jiangsu Key Laboratory of Spectral Imaging and Intelligence Sense Nanjing University of Science and Technology Nanjing 210094 China;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    SWIR imaging; Non-linear optics; Quasi phase-match;

    机译:SWIR成像;非线性光学;准相匹配;

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