Abstract

The refractive index is one of the essential parameters in describing biochemical reactions and biomedical diagnostics, and in situ measurement of the refractive index is very important for the micro total analysis system. We proposed an ultracompact biosensor based on a high numerical aperture metalens that was designed as two parts for generating the Pancharatnam–Berry phase and propagation phase, respectively, by using zinc sulfide nanofins, and nanopillars. Then incident light was modulated into a right-circularly polarized vortex beam and a left-circularly polarized vortex beam in the focal spot. The superposition of both beams can generate a structured vector beam with various polarization states along the focus direction. The polarization is sensitive to the difference of optical path, which has a potential application in index detection and biochemical analysis.

© 2019 Optical Society of America

Full Article  |  PDF Article
OSA Recommended Articles
High numerical aperture multifocal metalens based on Pancharatnam–Berry phase optical elements

Qinmiao Chen, Yan Li, Yanhua Han, Duo Deng, Dahai Yang, Ying Zhang, Yi Liu, and Jianmin Gao
Appl. Opt. 57(27) 7891-7894 (2018)

Visible-wavelength metalenses for diffraction-limited focusing of double polarization and vortex beams

Hongguang Dong, Faqiang Wang, Ruisheng Liang, Zhongchao Wei, Hongyun Meng, Li-Hua Jiang, Haifeng Cen, Ling Wang, Shijie Qin, and Chenglong Wang
Opt. Mater. Express 7(11) 4029-4037 (2017)

Dielectric longitudinal bifocal metalens with adjustable intensity and high focusing efficiency

Shengnan Tian, Hanming Guo, Jinbing Hu, and Songlin Zhuang
Opt. Express 27(2) 680-688 (2019)

References

You do not have subscription access to this journal. Citation lists with outbound citation links are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription

Cited By

You do not have subscription access to this journal. Cited by links are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription

Figures (5)

You do not have subscription access to this journal. Figure files are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription

Equations (4)

You do not have subscription access to this journal. Equations are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription

Metrics

You do not have subscription access to this journal. Article level metrics are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription