消色差透镜
光学
材料科学
微透镜
飞秒
色差
折射率
激光器
平版印刷术
光电子学
波带板
纳米压印光刻
软光刻
菲涅耳透镜
镜头(地质)
衍射
色阶
制作
医学
物理
替代医学
病理
作者
Qisong Li,Haosong Shi,Shao-Qiang Xi,Jiawei Jiang,Long Zhang,Yi Liu
出处
期刊:Optics Express
[The Optical Society]
日期:2023-08-17
卷期号:31 (18): 29368-29368
摘要
Herein, we report a novel biological hydrogel-based achromatic refractive-diffractive micro-optical element with single-material apochromatism. Benefiting from the stimulated responsive property of the hydrogel, pH modulation yielded swelling and affected the refractive index of the element, enabling multi-wavelength focusing performance tuning and chromatic aberration adjustment. Using femtosecond laser lithography, we fabricated a separate hydrogel microlens and Fresnel zone plate and measured the tunable focusing performance while varying pH; the results were consistent with our simulation results. Furthermore, we designed and fabricated a hydrogel-based achromatic refractive-diffractive micro-optical element and demonstrated achromatism with respect to three wavelengths using only one material consisting of a microlens and a Fresnel zone plate. We characterized the optical focusing properties and observed smaller chromatic aberration. The potential applications of such hybrid microoptical elements include biomedical imaging and optical biology sensing.
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