Broad-band phase retrieval method for transient radial shearing interference using chirp Z transform technique | |
Xue, Fang1,2; Duan, Ya-Xuan2; Chen, Xiao-Yi1,2; Li, Ming1,2; Yuan, Suo-Chao1,2; Da, Zheng-Shang2 | |
刊名 | CHINESE PHYSICS B |
2021-07 | |
卷号 | 30期号:8 |
关键词 | radial shearing interference chirp Z transform (CZT) phase retrieval |
ISSN号 | 1674-1056;2058-3834 |
DOI | 10.1088/1674-1056/abff2f |
产权排序 | 1 |
英文摘要 | The transient radial shearing interferometry technique based on fast Fourier transform (FFT) provides a means for the measurement of the wavefront phase of transient light field. However, which factors affect the spatial bandwidth of the wavefront phase measurement of this technology and how to achieve high-precision measurement of the broad-band transient wavefront phase are problems that need to be studied further. To this end, a theoretical model of phase-retrieved bandwidth of radial shearing interferometry is established in this paper. The influence of the spatial carrier frequency and the calculation window on phase-retrieved bandwidth is analyzed, and the optimal carrier frequency and calculation window are obtained. On this basis, a broad-band transient radial shearing interference phase-retrieval method based on chirp Z transform (CZT) is proposed, and the corresponding algorithm is given. Through theoretical simulation, a known phase is used to generate the interferogram and it is retrieved by the traditional method and the proposed method respectively. The residual wavefront RMS of the traditional method is 0.146 lambda, and it is 0.037 lambda for the proposed method, which manifests an improvement of accuracy by an order of magnitude. At the same time, different levels of signal-to-noise ratios (SNRs) from 50 dB to 10 dB of the interferogram are simulated, and the RMS of the residual wavefront is from 0.040 lambda to 0.066 lambda. In terms of experiments, an experimental verification device based on a phase-only spatial light modulator is built, and the known phase on the modulator is retrieved from the actual interferogram. The RMS of the residual wavefront retrieved through FFT is 0.112 lambda, and it decreases to 0.035 lambda through CZT. The experimental results verify the effectiveness of the method proposed in this paper. Furthermore, the method can be used in other types of spatial carrier frequency interference, such as lateral shearing interference, rotational shearing interference, flipping shearing interference, and four-wave shearing interference. |
语种 | 英语 |
出版者 | IOP PUBLISHING LTD |
WOS记录号 | WOS:000679076400001 |
内容类型 | 期刊论文 |
源URL | [http://ir.opt.ac.cn/handle/181661/94988] |
专题 | 西安光学精密机械研究所_先进光学仪器研究室 |
通讯作者 | Duan, Ya-Xuan |
作者单位 | 1.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 2.Chinese Acad Sci, Xian Inst Opt & Precis Mech, Adv Opt Instrument Res Dept, Xian 710119, Peoples R China |
推荐引用方式 GB/T 7714 | Xue, Fang,Duan, Ya-Xuan,Chen, Xiao-Yi,et al. Broad-band phase retrieval method for transient radial shearing interference using chirp Z transform technique[J]. CHINESE PHYSICS B,2021,30(8). |
APA | Xue, Fang,Duan, Ya-Xuan,Chen, Xiao-Yi,Li, Ming,Yuan, Suo-Chao,&Da, Zheng-Shang.(2021).Broad-band phase retrieval method for transient radial shearing interference using chirp Z transform technique.CHINESE PHYSICS B,30(8). |
MLA | Xue, Fang,et al."Broad-band phase retrieval method for transient radial shearing interference using chirp Z transform technique".CHINESE PHYSICS B 30.8(2021). |
个性服务 |
查看访问统计 |
相关权益政策 |
暂无数据 |
收藏/分享 |
除非特别说明,本系统中所有内容都受版权保护,并保留所有权利。
修改评论