Assessment of multifractal analysis in dynamic laser speckle signals using a spatial light modulator

Alvarez Natalia; Vadnjal Ana Laura; Etchepareborda Pablo; Bianchetti Arturo; Federico Alejandro

首页> 外文期刊>Applied optics >Assessment of multifractal analysis in dynamic laser speckle signals using a spatial light modulator

【24h】

Assessment of multifractal analysis in dynamic laser speckle signals using a spatial light modulator

机译：使用空间光调制器评估动态激光散斑信号中的多重分析

获取原文

获取原文并翻译 | 示例

掌桥外文数据库（机构版） >>

开具论文收录证明 >>

文献代查 >>

页面导航

摘要
著录项
相关主题

摘要

We assess and discuss several technical aspects of the multifractal statistical analysis applied to time series of dynamic speckle intensity signals. Due to the complexity of this goal, we implemented an optical setup that mimics the light scattering effect from the illuminated object using a spatial light modulator. The multifractal spectrum of the obtained dynamic speckle intensity signals is quantified by utilizing a mathematical framework based on the decomposition of wavelet leaders' functions. The propagated light that is scattered utilizing the spatial light modulator verifies the well-known first- and second-order statistics of the obtained speckle images and also a given temporal correlation function determined by a copula algorithm adding several classes of fractional Gaussian noises. To experimentally implement these issues, we load appropriate dynamic temporal phase screens in the spatial light modulator working on phase-only mode and guide the light propagation through an optical setup composed of a 4f correlator. Different types of statistical trends in the scaling properties as a function of frequency sampling, intensity signal discretization, mean size of speckle, temporal correlation length, and vanishing moments of the elected mother wavelet analysis are theoretically and experimentally tested and compared. (C) 2019 Optical Society of America

机译：我们评估并讨论应用于动态散斑强度信号的时间序列的多分术统计分析的几个技术方面。由于该目标的复杂性，我们利用空间光调制器实现了一种光学设置，该光学设置从照明物体模仿光散射效果。通过利用基于小波领导函数的分解的数学框架，通过数学框架来量化所获得的动态散斑强度信号的多重分谱。利用空间光调制器散射的传播光验证所获得的斑点图像的众所周知的第一和二阶统计，也是由Copula算法确定的给定的时间相关函数添加多个类别的分数高斯噪声。为了通过实验地实现这些问题，我们在空间光调制器中加载适当的动态时间相屏，在工作模式下工作，并通过由4F相关器组成的光学设置来引导光传播。不同类型的统计趋势在缩放特性中作为频率采样的函数，强度信号离散化，斑点的平均尺寸，时间相关长度和当学母母小波分析的消失时刻在理论上和实验测试和比较。（c）2019年光学学会

著录项

来源
《Applied optics》 |2019年第6期|共9页
作者
Alvarez Natalia; Vadnjal Ana Laura; Etchepareborda Pablo; Bianchetti Arturo; Federico Alejandro;
展开▼
作者单位

Consejo Nacl Invest Cient &

Tecn Inst Nacl Tecnol Ind Elect &

Informat POB B1650WAB B1650KNA San Martin Argentina;

Consejo Nacl Invest Cient &

Tecn Inst Nacl Tecnol Ind Elect &

Informat POB B1650WAB B1650KNA San Martin Argentina;

Consejo Nacl Invest Cient &

Tecn Inst Nacl Tecnol Ind Elect &

Informat POB B1650WAB B1650KNA San Martin Argentina;

Consejo Nacl Invest Cient &

Tecn Inst Nacl Tecnol Ind Elect &

Informat POB B1650WAB B1650KNA San Martin Argentina;

Inst Nacl Tecnol Ind Elect &

Informat POB B1650WAB B1650KNA San Martin Argentina;

展开▼
收录信息
原文格式 PDF
正文语种 eng
中图分类应用;
关键词

Assessment of multifractal analysis in dynamic laser speckle signals using a spatial light modulator

摘要

著录项

相关主题

期刊订阅