{"title":"基于简单光学系统和普通SHWFS的大行程VCM波前测量方法。","authors":"Mingxing Li, Guocong Wang, Ke Zhou, Yue Yu, Chaoliang Li, Weijun Chang","doi":"10.1364/OL.557953","DOIUrl":null,"url":null,"abstract":"<p><p>Wavefront measurement of a large-stroke variable curvature mirror (VCM) usually requires expensive equipment or a complex optical system. A method for measuring the wavefront of a large-stroke VCM based on a simple optical system and an ordinary Shark-Hartmann wavefront sensor (SHWFS) is proposed. The wavefront reflected from the VCM is limited to a small range by defocusing the light source (LS) adaptively according to the VCM wavefront, and the aberration influence of the relay optical system (ROS) between the VCM and SHWFS can be ignored. We demonstrate the effectiveness and superiority of our method. Compared with the traditional SHWFS method, the defocus measurement bias is approximately decreased from 40λ to 0.1λ when the VCM defocus is -160λ. The measurement accuracy can be further improved by reducing the LS defocus step size. The measuring range can be further enlarged by increasing the defocus range of the LS or decreasing the focal length of the collimating lens.</p>","PeriodicalId":19540,"journal":{"name":"Optics letters","volume":"50 15","pages":"4706-4709"},"PeriodicalIF":3.3000,"publicationDate":"2025-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Method for measuring the wavefront of a large-stroke VCM based on a simple optical system and an ordinary SHWFS.\",\"authors\":\"Mingxing Li, Guocong Wang, Ke Zhou, Yue Yu, Chaoliang Li, Weijun Chang\",\"doi\":\"10.1364/OL.557953\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<p><p>Wavefront measurement of a large-stroke variable curvature mirror (VCM) usually requires expensive equipment or a complex optical system. A method for measuring the wavefront of a large-stroke VCM based on a simple optical system and an ordinary Shark-Hartmann wavefront sensor (SHWFS) is proposed. The wavefront reflected from the VCM is limited to a small range by defocusing the light source (LS) adaptively according to the VCM wavefront, and the aberration influence of the relay optical system (ROS) between the VCM and SHWFS can be ignored. We demonstrate the effectiveness and superiority of our method. Compared with the traditional SHWFS method, the defocus measurement bias is approximately decreased from 40λ to 0.1λ when the VCM defocus is -160λ. The measurement accuracy can be further improved by reducing the LS defocus step size. The measuring range can be further enlarged by increasing the defocus range of the LS or decreasing the focal length of the collimating lens.</p>\",\"PeriodicalId\":19540,\"journal\":{\"name\":\"Optics letters\",\"volume\":\"50 15\",\"pages\":\"4706-4709\"},\"PeriodicalIF\":3.3000,\"publicationDate\":\"2025-08-01\",\"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.557953\",\"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}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Optics letters","FirstCategoryId":"101","ListUrlMain":"https://doi.org/10.1364/OL.557953","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}
Method for measuring the wavefront of a large-stroke VCM based on a simple optical system and an ordinary SHWFS.
Wavefront measurement of a large-stroke variable curvature mirror (VCM) usually requires expensive equipment or a complex optical system. A method for measuring the wavefront of a large-stroke VCM based on a simple optical system and an ordinary Shark-Hartmann wavefront sensor (SHWFS) is proposed. The wavefront reflected from the VCM is limited to a small range by defocusing the light source (LS) adaptively according to the VCM wavefront, and the aberration influence of the relay optical system (ROS) between the VCM and SHWFS can be ignored. We demonstrate the effectiveness and superiority of our method. Compared with the traditional SHWFS method, the defocus measurement bias is approximately decreased from 40λ to 0.1λ when the VCM defocus is -160λ. The measurement accuracy can be further improved by reducing the LS defocus step size. The measuring range can be further enlarged by increasing the defocus range of the LS or decreasing the focal length of the collimating lens.
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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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