Effect of the matrix dimension on the performance of photonic nanojets produce from an array of cubiod profile microsteps

Nayak, Chittaranjan; Saha, Ardhendu

doi:10.1016/j.ijleo.2016.09.009

Cited by 8 publications

(1 citation statement)

References 21 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…However, the generate point, which means the position where PNJ firstly formed, is very close to the shadow surface of the microstructure in these cases, which constrict the applications where need long working distance. In order to improve the quality of PNJ, other geometric structure, such as microcuboid [25], [26], microfiber [27], [28], microtoroid [29] and microaxicon [30], are proposed for generating of PNJs.…”

Section: Introductionmentioning

confidence: 99%

Ultrahigh Quality Factor Photonic Nanojets Generated by Truncated Microtoroid Structures

et al. 2021

View full text Add to dashboard Cite

A photonic nanojet (PNJ) is a highly confined light beam that focuses from the shadow side of microparticles. In 46.47 this work, we propose a PNJ with ultrahigh quality factor formed by dielectric truncated microtoroid. The key properties of PNJ, such as the maximum intensity, the length of PNJ, the full-width at half maximum (FWHM), are studied in detail using finite-difference time-domain (FDTD) analysis. The results show that a PNJ with an enhanced intensity of 55.21 times to the incident light, superlong length of 46.47 and subwavelength FWHM of 0.77 is formed by semi-microtoroid, thus, an ultrahigh quality factor of 3308.68 is achieved. More importantly, the properties of the PNJ are tunable by changing the truncated proportions of the microtoroid. The structure we proposed has the advantages of compact structure and simple experimental operation, which is expected to apply in many research fields, including optical detection, optical data storage, super-resolution image, nanopattern, nanolithography, and so on.

show abstract