Abstract

Variable-focus lenses are essential elements of optical systems with extensive applications in microscopy, photography, and optical detection. However, conventional varifocal optical systems obtain a limited tunable capability at the expense of bulk size and slow speed. The metasurfaces are two-dimensional flat structures composed of subwavelength scatterers that exhibit the strong potential for developing ultrathin optics. Here we propose and experimentally demonstrate an all-dielectric polarization-multiplexing metalens with the capability to selectively focus polarized light. The focal length can be controlled by altering the linear polarization state of the incident light. The metalens has focusing efficiencies higher than 72% and exhibits nearly diffraction-limited focusing at long-wavelength infrared frequency. In addition, it is easy to realize high throughput with low manufacturing cost due to the use of complementary metal oxide semiconductor-compatible processes. We envision that this type of polarization-dependent device may pave the way towards the development of compact, multifunctional, and tunable optics.

© 2018 Optical Society of America

Full Article  |  PDF Article
More Like This
Linear polarization distinguishing metalens in visible wavelength

Mao Ye, Vishva Ray, Yueheng Peng, Wei Guo, and Ya Sha Yi
Opt. Lett. 44(2) 399-402 (2019)

Design of a broadband achromatic dielectric metalens for linear polarization in the near-infrared spectrum

Zijing Zhang, Zhichen Cui, Yuan Liu, Sicheng Wang, Isabelle Staude, Zhenyu Yang, and Ming Zhao
OSA Continuum 1(3) 882-890 (2018)

High numerical aperture microwave metalens

Yong-Qiang Liu, Jinhai Sun, Yongxing Che, Kainan Qi, Liangsheng Li, and Hongcheng Yin
Opt. Lett. 45(22) 6262-6265 (2020)

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 Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica 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 Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica 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 Optica member, or as an authorized user of your institution.

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

Equations (2)

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

Contact your librarian or system administrator
or
Login to access Optica 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 Optica member, or as an authorized user of your institution.

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