Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Efficient generation of optical bottle beams   Optical bottle beams can be used to trap atoms and small low-index particles.
We introduce a figure of merit for optical bottle beams, specifically in the
context of optical traps, and use it to compare optical bottle-beam traps
obtained by three different methods. Using this figure of merit and an
optimization algorithm, we identified optical bottle-beam traps based on a
Gaussian beam illuminating a metasurface that are superior in terms of power
efficiency than existing approaches. We numerically demonstrate a silicon
metasurface for creating an optical bottle-beam trap.

6
The categories of this paper are: astro-ph
33
The categories of this paper are: plasm-ph
7
The categories of this paper are: hep-th
22
The categories of this paper are: chao-dyn
18
The categories of this paper are: econ
27
The categories of this paper are: comp-gas
25
The categories of this paper are: patt-sol
19
The categories of this paper are: eess
2
The categories of this paper are: math
32
The categories of this paper are: atom-ph
0
The categories of this paper are: hep-ph
5
The categories of this paper are: gr-qc
34
The categories of this paper are: chem-ph
29
The categories of this paper are: funct-an
14
The categories of this paper are: math-ph
9
The categories of this paper are: nlin