沙漏状纳米柱超表面激光的线性均匀化

IF 5 2区物理与天体物理 Q1 OPTICS

Optics and Laser Technology Pub Date : 2025-02-22 DOI:10.1016/j.optlastec.2025.112649

Yilin Li , Man Zhang , Liangping Xia , Chunyan Wang , Zengbao Yang , Suihu Dang , Guohui Chen , Wenqing Zhu , Chunlei Du

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引用次数: 0

摘要

提出了沙漏型纳米柱来构建能实现光束线性均匀化的超表面。与一般圆柱形结构相比，这种沙漏形纳米柱在小尺度下的光学响应更稳定，对加工误差的容忍度更高。我们利用沙漏形纳米柱设计了具有90度发散效应的线性光束均匀超表面。测试结果表明，在632 nm工作波长下，超表面光斑均匀度为68.34%，发散角为91.79度。结果表明，沙漏型纳米柱超表面在发散角可控的线激光均匀化方面具有优异的性能和显著的发展潜力。

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Linear homogenization of laser with hourglass-shaped nanopillars metasurface

The hourglass-type nanopillars were proposed to construct a metasurface that can achieve linear beam homogenization. Compared with general cylindrical structures, the optical response of this hourglass-shaped nanopillar is more stable at small scales and has a higher tolerance for processing errors. We designed a linear beam-homogenized metasurface with a 90 degrees divergence effect using hourglass-shaped nanopillars. According to the test results, at the operating wavelength of 632 nm, the metasurface has a spot uniformity of 68.34 % and a divergent angle of 91.79 degrees. As demonstrated by the results, the hourglass-type nanoapillar metasurface has excellent performance and significant development potential for line laser homogenization with a controllable divergent angle.

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来源期刊

Optics and Laser Technology 物理-光学

CiteScore

8.50

自引率

10.00%

发文量

1060

审稿时长

3.4 months

期刊介绍： Optics & Laser Technology aims to provide a vehicle for the publication of a broad range of high quality research and review papers in those fields of scientific and engineering research appertaining to the development and application of the technology of optics and lasers. Papers describing original work in these areas are submitted to rigorous refereeing prior to acceptance for publication. The scope of Optics & Laser Technology encompasses, but is not restricted to, the following areas: •development in all types of lasers •developments in optoelectronic devices and photonics •developments in new photonics and optical concepts •developments in conventional optics, optical instruments and components •techniques of optical metrology, including interferometry and optical fibre sensors •LIDAR and other non-contact optical measurement techniques, including optical methods in heat and fluid flow •applications of lasers to materials processing, optical NDT display (including holography) and optical communication •research and development in the field of laser safety including studies of hazards resulting from the applications of lasers (laser safety, hazards of laser fume) •developments in optical computing and optical information processing •developments in new optical materials •developments in new optical characterization methods and techniques •developments in quantum optics •developments in light assisted micro and nanofabrication methods and techniques •developments in nanophotonics and biophotonics •developments in imaging processing and systems