Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Engineering light absorption at critical coupling via bound states in
  the continuum   Recent progress in nanophotonics is driven by the desire to engineer
light-matter interaction in two-dimensional (2D) materials using high-quality
resonances in plasmonic and dielectric structures. Here, we demonstrate a link
between the radiation control at critical coupling and the metasurface-based
bound states in the continuum (BIC) physics, and develop a generalized theory
to engineer light absorption of 2D materials in coupling resonance
metasurfaces. In a typical example of hybrid graphene-dielectric metasurfaces,
we present the manipulation of absorption bandwidth by more than one order of
magnitude by simultaneously adjusting the asymmetry parameter of silicon
resonators governed by BIC and the graphene surface conductivity while the
absorption efficiency maintains maximum. This work reveals the generalized role
of BIC in the radiation control at critical coupling and provides promising
strategies in engineering light absorption of 2D materials for high-efficiency
optoelectronics device applications, e.g., light emission, detection and
modulation.

1
The categories of this paper are: cs
34
The categories of this paper are: chem-ph
13
The categories of this paper are: quant-ph
11
The categories of this paper are: hep-lat
29
The categories of this paper are: funct-an
23
The categories of this paper are: solv-int
35
The categories of this paper are: mtrl-th
21
The categories of this paper are: adap-org
28
The categories of this paper are: alg-geom
0
The categories of this paper are: hep-ph
12
The categories of this paper are: nucl-th
25
The categories of this paper are: patt-sol
33
The categories of this paper are: plasm-ph
30
The categories of this paper are: q-alg
4
The categories of this paper are: cond-mat
16
The categories of this paper are: stat