Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Temporal Walk-off Induced Dissipative Quadratic Solitons   A plethora of applications have recently motivated extensive efforts on the
generation of low noise Kerr solitons and coherent frequency combs in various
platforms ranging from fiber to whispering gallery and integrated microscale
resonators. However, the Kerr (cubic) nonlinearity is inherently weak, and in
contrast, strong quadratic nonlinearity in optical resonators is expected to
provide an alternative means for soliton formation with promising potential.
Here, we demonstrate the formation of a dissipative quadratic soliton via
non-stationary optical parametric amplification in the presence of significant
temporal walk-off between pump and signal leading to half-harmonic generation
accompanied by a substantial pulse compression (exceeding a factor of 40) at
low pump pulse energies ($\sim$ 4 picojoules). The bright quadratic soliton
forms in a low-finesse cavity in both normal and anomalous dispersion regimes,
which is in stark contrast with bright Kerr solitons. We present a route to
significantly improve the performance of the demonstrated quadratic soliton
when extended to an integrated nonlinear platform to realize highly-efficient
extreme pulse compression leading to the formation of few-cycle soliton pulses
starting from ultra-low energy picosecond scale pump pulses that are widely
tunable from ultra-violet to mid-infrared spectral regimes.

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The categories of this paper are: cs
17
The categories of this paper are: q-fin
4
The categories of this paper are: cond-mat
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The categories of this paper are: dg-ga
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The categories of this paper are: alg-geom
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The categories of this paper are: comp-gas
32
The categories of this paper are: atom-ph
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The categories of this paper are: hep-ex
26
The categories of this paper are: bayes-an
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The categories of this paper are: eess
37
The categories of this paper are: supr-con
10
The categories of this paper are: q-bio
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The categories of this paper are: q-alg
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The categories of this paper are: plasm-ph
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The categories of this paper are: astro-ph
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The categories of this paper are: chao-dyn