Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Time-domain ptychography   Through dedicated measurements in the optical regime we demonstrate that
ptychography can be applied to reconstruct complex-valued object functions that
vary with time from a sequence of spectral measurements. A probe pulse of
approximately 1 ps duration, time delayed in increments of 0.25 ps is shown to
recover dynamics on a ten times faster time scale with an experimental limit of
approximately 5 fs.

37
The categories of this paper are: supr-con
33
The categories of this paper are: plasm-ph
10
The categories of this paper are: q-bio
34
The categories of this paper are: chem-ph
31
The categories of this paper are: ao-sci
22
The categories of this paper are: chao-dyn
8
The categories of this paper are: hep-ex
25
The categories of this paper are: patt-sol
12
The categories of this paper are: nucl-th
15
The categories of this paper are: nucl-ex
11
The categories of this paper are: hep-lat
35
The categories of this paper are: mtrl-th
9
The categories of this paper are: nlin
20
The categories of this paper are: acc-phys
4
The categories of this paper are: cond-mat
16
The categories of this paper are: stat