Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Single-shot complete spatiotemporal Strehl ratio metrology of ultrashort
  laser pulses -- theory   Ultra-high intensity femtosecond lasers at focus are now routinely used for
relativistic motion of charged particles with peak intensities over
10^18W/cm^2. Such high-field experiments are very sensitive to the value of the
peak intensity. Therefore, precise knowledge of the pulse intensity is a key
prerequisite for the correct interpretation of experimental data. Accurate
measurement of energy, spectral and spatial profiles being well established,
peak intensity evaluation then only requires the determination of the
spatiotemporal Strehl ratio. Here I propose a new method based on a simple
analysis of a nonlinear effect. It diagnoses all the temporal, spatial and
spatiotemporal coupling distortions. This method can even be implemented on
target by using relativistic surface harmonic generation for example.

23
The categories of this paper are: solv-int
18
The categories of this paper are: econ
30
The categories of this paper are: q-alg
15
The categories of this paper are: nucl-ex
12
The categories of this paper are: nucl-th
35
The categories of this paper are: mtrl-th
34
The categories of this paper are: chem-ph
28
The categories of this paper are: alg-geom
13
The categories of this paper are: quant-ph
1
The categories of this paper are: cs
7
The categories of this paper are: hep-th
4
The categories of this paper are: cond-mat
10
The categories of this paper are: q-bio
19
The categories of this paper are: eess
37
The categories of this paper are: supr-con
33
The categories of this paper are: plasm-ph