Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Source laser intense pour le refroidissement du 87Rb par doublement de
  fr\'equence d'un laser fibr\'e t\'el\'ecom   We built a frequency-doubled laser for 87Rb laser cooling, from a Telecom
fiber laser. Thanks to intense technological development, telecom fiber lasers
exhibit outstanding properties regarding relative intensity noise and
modulation bandwidth. The enhanced doubling efficiency of periodically poled
crystals allowed to obtain up to 1.8 W at 780 nm from 10 W at 1560 nm, with a
simple pass configuration in a 50-mm long crystal of ppLN:MgO. This technique
can also be applied at the wavelength of potassium (767 nm) (Bourdel, 2009) and
could be of great interest for the realization of dipole traps.

0
The categories of this paper are: hep-ph
23
The categories of this paper are: solv-int
25
The categories of this paper are: patt-sol
14
The categories of this paper are: math-ph
9
The categories of this paper are: nlin
6
The categories of this paper are: astro-ph
15
The categories of this paper are: nucl-ex
2
The categories of this paper are: math
35
The categories of this paper are: mtrl-th
7
The categories of this paper are: hep-th
18
The categories of this paper are: econ
19
The categories of this paper are: eess
22
The categories of this paper are: chao-dyn
12
The categories of this paper are: nucl-th
1
The categories of this paper are: cs
11
The categories of this paper are: hep-lat