Abstract
The physical origin of subwavelength photonic nanojet in specular-reflection mode (s-PNJ) is theoretically considered. This specific type of photonic nanojet (PNJ) emerges upon double focusing of a plane optical wave by a transparent dielectric microparticle located near a flat mirror. For the first time, to the best of our knowledge, we report a unique property of s-PNJ for increasing its focal length and intensity using circular-shaped microparticles with a refractive index ratio exceeding the known limiting value that fundamentally distinguishes s-PNJ from regular PNJ behavior. This may drastically increase the trapping potential of PNJ-based optical tweezers.
| Original language | English |
|---|---|
| Pages (from-to) | 3885-3888 |
| Number of pages | 4 |
| Journal | Optics Letters |
| Volume | 45 |
| Issue number | 14 |
| DOIs | |
| Publication status | Published - 15 Jul 2020 |
ASJC Scopus subject areas
- Atomic and Molecular Physics, and Optics
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Geints, Y. E., Zemlyanov, A. A., Minin, I. V., & Minin, O. V. (2020). Overcoming refractive index limit of mesoscale light focusing by means of specular-reflection photonic nanojet. Optics Letters, 45(14), 3885-3888. https://doi.org/10.1364/OL.398367