Coherence imaging for laser detection
Coherence imaging for laser detection
复制标题
用于激光检测的相干成像
DOI：
10.1117/12.2573194
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发表时间：
2020
影响因子：
1.3
通讯作者：
Marie Zandi
中科院分区：
文献类型：
--
作者：
D. Benton;K. Sugden;Marie Zandi
借助于相干检测的激光的检测通常以一维方式使用干涉测量法，例如使用马赫曾德尔干涉仪。我们采用一种二维的方法，利用空间光调制器和照相机来检验二元全息术区分相干和非相干入射光的结果。提出了一种利用DMD阵列将光聚焦到CCD摄像机上来确定相干光的存在、波长和到达角的方法。我们讨论了使用泽尼克模式来克服DMD器件中固有的像差，从而改善聚焦质量和提高波长确定的精度。
The detection of lasers by means of coherence detection often uses interferometry in a one-dimensional manner such as with a Mach Zehnder interferometer. We are taking a two dimensional approach making use of a spatial light modulator and a camera to examine the results of binary holography in differentiating coherent and incoherent incoming light. A DMD micromirror array focusing light onto a CCD camera is presented as a method for determining the presence of coherent light, its wavelength and angle of arrival. We discuss the use of Zernike modes to overcome the aberrations inherent in the DMD device, thereby improving the focussing quality and improving the precision of wavelength determination.