.png){kind=icon}
返回
Tunable diffraction-free array in nonlinear photonic crystal
.png){kind=icon}
OA
AI
DOI：10.1038/srep40856.png)
.png){kind=icon}
.png){kind=icon}
分享.png){kind=icon}
收藏
摘要
En 中文
Diffraction-free beams have attracted increasing research interests because of their unique performances and broad applications in various fields. Although many methods have been developed to produce such beams, it is still challenging to realize a tunable non-diffracting beam. Here, we report the generation of a tunable diffraction-free array through second-harmonic generation in a nonlinear photonic crystal, i.e., a 2D periodically-poled LiTaO3 crystal. In such a crystal, the second-harmonic wave is engineered by properly designing the domain structure based on the Huygens-Fresnel principle. The characteristics of the generated diffraction-free array including its period, propagation length, and wavelength can be tuned by simply changing the input wavelength. Our observation not only enriches the diffraction-free optics, but also has potential applications for photolithography and imaging.
Keyword:
2ND-HARMONIC GENERATION
BESSEL BEAMS
NONDIFFRACTING BEAMS
MICROMANIPULATION
AXICON
AI总结
对已上传原文的论文进行重点信息的提取，主要内容包括：简要概述、研究摘要、背景介绍、关键亮点、图文解析、展望与总结。
期刊
IF:
3.9
论文数:
28.2W
被引数:
83.5W
机构
引用论文
Cerenkov-type second-harmonic generation with fundamental beams of different polarizations.png)
OPTICS LETTERS
OPTICS LETTERSIF3.3
PREAI
分享收藏
查看更多内容