Abstract

In this Letter, the direct generation of twin photonic nanojets (PNJs) through two coherent illuminations of a microcylinder is investigated theoretically and experimentally. The dielectric microcylinder (polydimethylsiloxane) with 5 μm diameter and 6 μm height is employed to generate symmetric twin PNJs. The finite-difference time-domain calculation is used to simulate the electric field distributions inside and outside the microcylinder. The scanning optical microscope system is performed for experimental verification of twin photonic nanojets. In both theory and in practice, the intensity null of electric field creates two separate PNJs. Compared to a single PNJ, twin PNJs have a smaller subwavelength waist and more complex intensity distribution. The focal distance, interval, and full width at half-maximum of twin PNJs are a function of the offset angle. The twin PNJs will provide novel applications in nanolithography, optical trapping, biophotonic sensing, and therapy.

© 2019 Optical Society of America

Full Article  |  PDF Article
OSA Recommended Articles
Direct imaging of optimal photonic nanojets from core-shell microcylinders

Cheng-Yang Liu and Kai-Lung Hsiao
Opt. Lett. 40(22) 5303-5306 (2015)

Optimization of photonic nanojets generated by multilayer microcylinders with a genetic algorithm

Yin Huang, Zhishen Zhen, Yuecheng Shen, Changjun Min, and Georgios Veronis
Opt. Express 27(2) 1310-1325 (2019)

Super-long photonic nanojet generated from liquid-filled hollow microcylinder

Guoqiang Gu, Rui Zhou, Zaichun Chen, Huiying Xu, Guoxiong Cai, Zhiping Cai, and Minghui Hong
Opt. Lett. 40(4) 625-628 (2015)

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 (4)

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

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