Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Controlling nonlinear interaction in a many-mode laser by tuning
  disorder   A many-mode laser with nonlinear modal interaction could serve as a model
system to study many-body physics. However, precise and continuous tuning of
the interaction strength over a wide range is challenging. Here, we present a
unique method for controlling lasing mode structures by introducing random
phase fluctuation to a nearly degenerate cavity. We show numerically and
experimentally that as the characteristic scale of phase fluctuation decreases
by two orders of magnitude, the transverse modes become fragmented and the
reduction of their spatial overlap suppresses modal competition for gain,
allowing more modes to lase. The tunability, flexibility and robustness of our
system provides a powerful platform for investigating many-body phenomena.

19
The categories of this paper are: eess
8
The categories of this paper are: hep-ex
30
The categories of this paper are: q-alg
37
The categories of this paper are: supr-con
15
The categories of this paper are: nucl-ex
23
The categories of this paper are: solv-int
9
The categories of this paper are: nlin
31
The categories of this paper are: ao-sci
25
The categories of this paper are: patt-sol
20
The categories of this paper are: acc-phys
36
The categories of this paper are: cmp-lg
34
The categories of this paper are: chem-ph
13
The categories of this paper are: quant-ph
35
The categories of this paper are: mtrl-th
24
The categories of this paper are: dg-ga
17
The categories of this paper are: q-fin