Abstract
Using a superposition of shifted Bessel beams with different longitudinal wave vectors and orbital angular momenta, we realize an optical beam having simultaneous axial, angular, and radial focusing narrower than the Fourier limit. Our findings can be useful for optical particle manipulation and high-resolution microscopy.
| Original language | English |
|---|---|
| Pages (from-to) | 3482-3485 |
| Number of pages | 4 |
| Journal | Optics Letters |
| Volume | 45 |
| Issue number | 13 |
| DOIs | |
| State | Published - 1 Jul 2020 |