首页> 外文期刊>Optics Letters >Geometrical phase image encryption obtained with space-variant subwavelength gratings
【24h】

Geometrical phase image encryption obtained with space-variant subwavelength gratings

机译:利用空变亚波长光栅获得几何相位图像加密

获取原文
获取原文并翻译 | 示例
           

摘要

An optical encryption method based on a geometrical phase produced by space-variant polarization manipulation is presented. The decrypted picture is retrieved either by a polarization measurement of the beam emerging from the encrypted element or by a single intensity measurement of the beam transmitted through the encrypted element followed by an optical key element. Both elements are realized by use of computer-generated space-variant subwavelength dielectric gratings. Theoretical analyses of the optical concept are presented along with experimental results.
机译:提出了一种基于空变偏振操纵产生的几何相位的光加密方法。通过对从加密元件射出的光束进行偏振测量,或者对通过加密元件的光束进行单次强度测量,然后再通过光学钥匙元件,可以获取解密的图片。这两个元件都是通过使用计算机生成的空间变化亚波长电介质光栅来实现的。提出了光学概念的理论分析以及实验结果。

著录项

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