Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Two-shot measurement of spatial coherence   We propose and demonstrate an interferometric scheme for measuring the
two-dimensional two-point cross-spectral density function in a two-shot manner.
Our scheme comprises a Michelson interferometer with a converging lens in one
of the arms of the interferometer, and the crosss-pectral density function of
an input optical field gets encoded in the intensity distribution of the output
interferograms. This scheme works for any cross-spectral density function that
is real and that depends on the spatial coordinates only through their
difference. Using this scheme, we report measurements of several
lab-synthesized cross-spectral density functions with very good agreement with
theory. Our measurement technique can be very important for applications that
are based on utilizing the partial spatial coherence properties of optical
fields.

25
The categories of this paper are: patt-sol
30
The categories of this paper are: q-alg
20
The categories of this paper are: acc-phys
7
The categories of this paper are: hep-th
8
The categories of this paper are: hep-ex
23
The categories of this paper are: solv-int
11
The categories of this paper are: hep-lat
12
The categories of this paper are: nucl-th
21
The categories of this paper are: adap-org
10
The categories of this paper are: q-bio
14
The categories of this paper are: math-ph
26
The categories of this paper are: bayes-an
1
The categories of this paper are: cs
9
The categories of this paper are: nlin
15
The categories of this paper are: nucl-ex
27
The categories of this paper are: comp-gas