Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: High speed, high power 2D beam steering for mitigation of optomechanical
  parametric instability in gravitational wave detectors   In this paper we propose a novel strategy to control optomechanical
parametric instability (PI) in gravitational wave (GW) detectors, based on
radiation pressure. The fast deflection of a high power beam is the key element
of our approach. We built a 2D deflection system based on a pair of
acousto-optic modulators (AOMs) that combines high rapidity and large scan
range. As fast frequency switching configurable AOM driver we used an Universal
Software Radio Peripheral (USRP) combined with a high performance personal
computer (PC). In this way we demonstrate a 2D beam steering system with flat
efficiency over the whole scan range and with a transition time of 50 ns
between two arbitrary consecutive deflection positions for a beam power of 3.6
W.

27
The categories of this paper are: comp-gas
24
The categories of this paper are: dg-ga
17
The categories of this paper are: q-fin
37
The categories of this paper are: supr-con
22
The categories of this paper are: chao-dyn
14
The categories of this paper are: math-ph
21
The categories of this paper are: adap-org
30
The categories of this paper are: q-alg
9
The categories of this paper are: nlin
20
The categories of this paper are: acc-phys
1
The categories of this paper are: cs
31
The categories of this paper are: ao-sci
12
The categories of this paper are: nucl-th
26
The categories of this paper are: bayes-an
11
The categories of this paper are: hep-lat
7
The categories of this paper are: hep-th