Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Using Quantum Coherence to Enhance Gain in Atomic Physics   Quantum coherence and interference effects in atomic and molecular physics
has been extensively studied due to intriguing counterintuitive physics and
potential important applications. Here we present one such application of using
quantum coherence to generate and enhance gain in extreme
ultra-violet(XUV)(@58.4nm in Helium) and infra-red(@794.76nm in Rubidium)
regime of electromagnetic radiation. We show that using moderate external
coherent drive, a substantial enhancement in the energy of the lasing pulse can
be achieved under optimal conditions. We also discuss the role of coherence.
The present paper is intended to be pedagogical on this subject of
coherence-enhanced lasing.

33
The categories of this paper are: plasm-ph
30
The categories of this paper are: q-alg
5
The categories of this paper are: gr-qc
22
The categories of this paper are: chao-dyn
20
The categories of this paper are: acc-phys
2
The categories of this paper are: math
32
The categories of this paper are: atom-ph
35
The categories of this paper are: mtrl-th
25
The categories of this paper are: patt-sol
11
The categories of this paper are: hep-lat
31
The categories of this paper are: ao-sci
0
The categories of this paper are: hep-ph
16
The categories of this paper are: stat
28
The categories of this paper are: alg-geom
15
The categories of this paper are: nucl-ex
12
The categories of this paper are: nucl-th