Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Cheapest nuller in the world: Crossed beamsplitter cubes   In this communication is described a new type of Achromatic phase shifter
(APS) suitable for both nulling interferometry and coronagraphy, based on a
couple of crossed beamsplitter cubes, well-suited for equipping future
spaceborne instruments searching for extra-solar planets located in a habitable
zone. We present the general principle of this APS and discuss possible
implementations into a nulling coronagraph telescope or into a sparse-aperture
interferometer, either of the Fizeau or Michelson type. Expected performance in
terms of transmission maps and a preliminary tolerance analysis are also
provided. It turns out that the device is cheap, compact, and presents
reasonable manufacturing tolerances and costs

33
The categories of this paper are: plasm-ph
37
The categories of this paper are: supr-con
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The categories of this paper are: q-fin
18
The categories of this paper are: econ
4
The categories of this paper are: cond-mat
11
The categories of this paper are: hep-lat
27
The categories of this paper are: comp-gas
0
The categories of this paper are: hep-ph
2
The categories of this paper are: math
30
The categories of this paper are: q-alg
35
The categories of this paper are: mtrl-th
12
The categories of this paper are: nucl-th
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The categories of this paper are: chem-ph
36
The categories of this paper are: cmp-lg
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The categories of this paper are: funct-an
10
The categories of this paper are: q-bio