首页> 外文期刊>Optics Letters >Fringe-free holographic measurements of large-amplitude vibrations
【24h】

Fringe-free holographic measurements of large-amplitude vibrations

机译:大振幅振动的无边缘全息测量

获取原文
获取原文并翻译 | 示例
           

摘要

In the measurement of the amplitude of vibration of objects, holographic imaging techniques usually involve fringe counting; because of the limited resolution of the images, measurements of large amplitudes are not accessible. We demonstrate a technique that suppresses the necessity of fringe counting—frequency sideband imaging—where the order of the sideband is considered a marker of the amplitude. The measurement is completely local: no comparison with another reference point on the object is necessary. It involves a sharp variation of a signal, which makes it robust against perturbations. The method is demonstrated in an experiment made with a vibrating clarinet reed; phase modulations as large as 1000   rad have been measured.
机译:在测量物体的振动幅度时,全息成像技术通常涉及条纹计数。由于图像分辨率有限,无法进行大幅度测量。我们演示了一种抑制条纹计数(频率边带成像)的必要性的技术,其中边带的阶数被认为是幅度的标记。测量完全是局部的:无需与对象上的另一个参考点进行比较。它涉及信号的急剧变化,从而使其抗干扰能力强。用振动单簧管簧片做的实验证明了该方法。已经测量了高达1000 rad的相位调制。

著录项

  • 来源
    《Optics Letters》 |2009年第23期|p.3698-3700|共3页
  • 作者单位

    1Laboratoire Kastler-Brossel, UMR 8552 CNRS, École Normale Supérieure, Université Paris 6, 24 rue Lhomond 75231 Paris Cedex 05 France 2Institut Langevin, UMR 7587 CNRS INSERM, ESPCI ParisTech, Université Paris 6, Université Paris 7, 10 rue Vauquelin, 75 231 Paris Cedex 05, France;

  • 收录信息
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱:kefu@zhangqiaokeyan.com

京公网安备:11010802029741号 ICP备案号:京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有
  • 客服微信

  • 服务号