Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: A micro-sized parametric spin-wave amplifier   We present the experimental observation of the localized amplification of
externally excited spin waves in a transversely in-plane magnetized
Ni$_{81}$Fe$_{19}$ magnonic waveguide by means of parallel pumping. By
employing microfocussed Brillouin light scattering spectroscopy, we analyze the
dependency of the amplification on the applied pumping power and on the delay
between the input spin-wave packet and the pumping pulse. We show that there
are two different operation regimes: At large pumping powers, the spin-wave
packet needs to enter the amplifier before the pumping is switched on in order
to be amplified while at low powers the spin-wave packet can arrive at any time
during the pumping pulse.

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The categories of this paper are: cs
9
The categories of this paper are: nlin
26
The categories of this paper are: bayes-an
22
The categories of this paper are: chao-dyn
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The categories of this paper are: math
18
The categories of this paper are: econ
11
The categories of this paper are: hep-lat
0
The categories of this paper are: hep-ph
35
The categories of this paper are: mtrl-th
32
The categories of this paper are: atom-ph
21
The categories of this paper are: adap-org
29
The categories of this paper are: funct-an
30
The categories of this paper are: q-alg
12
The categories of this paper are: nucl-th
13
The categories of this paper are: quant-ph
23
The categories of this paper are: solv-int