{"title":"High-precision wavefront shaping based on high-pass filtering.","authors":"Linxian Liu, Qiuyuan Li, Chunxu Ding, Jia Gao, Jiangtao Feng, Yaozong Zhao, Jiamiao Yang","doi":"10.1364/OL.554451","DOIUrl":null,"url":null,"abstract":"<p><p>Digital micromirror devices (DMDs) provide high refresh rates for fast light modulation in wavefront shaping. However, the binarized modulation of the optical field by the DMDs introduces a constant direct current (DC) optical field, which causes non-negligible background noise. This limits the modulation accuracy in DMD-based wavefront shaping. To address this, we propose a high-precision wavefront shaping method based on high-pass filtering, which eliminates the DC optical field and improves the anti-scattering focusing by filtering out the low-frequency spatial components. The experimental results show that this method significantly reduces the speckle similarity of optical fields modulated by different DMD patterns through the same scattering medium. Compared with the conventional method, this method can improve the anti-scattering focusing contrast by 1.7 times.</p>","PeriodicalId":19540,"journal":{"name":"Optics letters","volume":"50 4","pages":"1305-1308"},"PeriodicalIF":3.3000,"publicationDate":"2025-02-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Optics letters","FirstCategoryId":"101","ListUrlMain":"https://doi.org/10.1364/OL.554451","RegionNum":2,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"OPTICS","Score":null,"Total":0}
引用次数: 0
Abstract
Digital micromirror devices (DMDs) provide high refresh rates for fast light modulation in wavefront shaping. However, the binarized modulation of the optical field by the DMDs introduces a constant direct current (DC) optical field, which causes non-negligible background noise. This limits the modulation accuracy in DMD-based wavefront shaping. To address this, we propose a high-precision wavefront shaping method based on high-pass filtering, which eliminates the DC optical field and improves the anti-scattering focusing by filtering out the low-frequency spatial components. The experimental results show that this method significantly reduces the speckle similarity of optical fields modulated by different DMD patterns through the same scattering medium. Compared with the conventional method, this method can improve the anti-scattering focusing contrast by 1.7 times.
期刊介绍：
The Optical Society (OSA) publishes high-quality, peer-reviewed articles in its portfolio of journals, which serve the full breadth of the optics and photonics community.
Optics Letters offers rapid dissemination of new results in all areas of optics with short, original, peer-reviewed communications. Optics Letters covers the latest research in optical science, including optical measurements, optical components and devices, atmospheric optics, biomedical optics, Fourier optics, integrated optics, optical processing, optoelectronics, lasers, nonlinear optics, optical storage and holography, optical coherence, polarization, quantum electronics, ultrafast optical phenomena, photonic crystals, and fiber optics. Criteria used in determining acceptability of contributions include newsworthiness to a substantial part of the optics community and the effect of rapid publication on the research of others. This journal, published twice each month, is where readers look for the latest discoveries in optics.
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