Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: High-order phase-dependent asymmetry in the above-threshold ionization
  plateau   Above-threshold ionization spectra from cesium are measured as a function of
the carrier-envelope phase (CEP) using laser pulses centered at 3.1 $\mu$m
wavelength. The directional asymmetry in the energy spectra of backscattered
electrons oscillates three times, rather than once, as the CEP is changed from
$0$ to $2\pi$. Using the improved strong-field approximation, we show that the
unusual behavior arises from the interference of few quantum orbits. We discuss
the conditions for observing the high-order CEP dependence, and draw an analogy
with time-domain holography with electron wave packets.

9
The categories of this paper are: nlin
8
The categories of this paper are: hep-ex
31
The categories of this paper are: ao-sci
4
The categories of this paper are: cond-mat
22
The categories of this paper are: chao-dyn
34
The categories of this paper are: chem-ph
11
The categories of this paper are: hep-lat
29
The categories of this paper are: funct-an
13
The categories of this paper are: quant-ph
2
The categories of this paper are: math
23
The categories of this paper are: solv-int
7
The categories of this paper are: hep-th
21
The categories of this paper are: adap-org
30
The categories of this paper are: q-alg
20
The categories of this paper are: acc-phys
36
The categories of this paper are: cmp-lg