Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Spectral beam combining of Yb-doped fiber lasers using wavelength
  dependent polarization rotators and polarization beam combiners   We propose a robust spectral beam combining scheme using wavelength dependent
polarisation rotators and polarization beam combiners. We successfully
demonstrated the concept for two Yb-doped fiber lasers at 1064nm and 1092nm up
to a total input power of 90W. The results reveal a very good combining
efficiency and the potential for scaling to high power operations in this
method of beam combining.

26
The categories of this paper are: bayes-an
28
The categories of this paper are: alg-geom
17
The categories of this paper are: q-fin
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
15
The categories of this paper are: nucl-ex
2
The categories of this paper are: math
8
The categories of this paper are: hep-ex
27
The categories of this paper are: comp-gas
11
The categories of this paper are: hep-lat
0
The categories of this paper are: hep-ph
22
The categories of this paper are: chao-dyn
36
The categories of this paper are: cmp-lg
12
The categories of this paper are: nucl-th
32
The categories of this paper are: atom-ph