The gated integration technique for the accurate measurement of the autocorrelation function of speckle intensities scattered from random phase screens
文献类型：期刊论文
| 作者 | Zhang Ningyu ; Cheng Chuanfu ; Teng Shuyun ; Chen Xiaoyi ; Xu ZZ(徐至展) |
| 刊名 | opt. laser technol.
 |
| 出版日期 | 2007 |
| 卷号 | 39期号:6页码:1150 |
| 关键词 | gated integration speckle intensity autocorrelation function |
| ISSN号 | 0030-3992 |
| 中文摘要 | a new approach based on the gated integration technique is proposed for the accurate measurement of the autocorrelation function of speckle intensities scattered from a random phase screen. the boxcar used for this technique in the acquisition of the speckle intensity data integrates the photoelectric signal during its sampling gate open, and it repeats the sampling by a preset number, in. the average analog of the in samplings output by the boxcar enhances the signal-to-noise ratio by root m, because the repeated sampling and the average make the useful speckle signals stable, while the randomly varied photoelectric noise is suppressed by 1/ root m. in the experiment, we use an analog-to-digital converter module to synchronize all the actions such as the stepped movement of the phase screen, the repeated sampling, the readout of the averaged output of the boxcar, etc. the experimental results show that speckle signals are better recovered from contaminated signals, and the autocorrelation function with the secondary maximum is obtained, indicating that the accuracy of the measurement of the autocorrelation function is greatly improved by the gated integration technique. (c) 2006 elsevier ltd. all rights reserved. |
| 收录类别 | EI |
| 语种 | 英语 |
| WOS记录号 | WOS:000246456900010 |
| 公开日期 | 2009-09-18 |
| 源URL | [http://ir.siom.ac.cn/handle/181231/990]  |
| 专题 | 上海光学精密机械研究所_强场激光物理国家重点实验室 |
| 推荐引用方式 GB/T 7714 | Zhang Ningyu,Cheng Chuanfu,Teng Shuyun,et al. The gated integration technique for the accurate measurement of the autocorrelation function of speckle intensities scattered from random phase screens[J]. opt. laser technol.,2007,39(6):1150, 1154. |
| APA | Zhang Ningyu,Cheng Chuanfu,Teng Shuyun,Chen Xiaoyi,&徐至展.(2007).The gated integration technique for the accurate measurement of the autocorrelation function of speckle intensities scattered from random phase screens.opt. laser technol.,39(6),1150. |
| MLA | Zhang Ningyu,et al."The gated integration technique for the accurate measurement of the autocorrelation function of speckle intensities scattered from random phase screens".opt. laser technol. 39.6(2007):1150. |
入库方式： OAI收割
来源：上海光学精密机械研究所
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