Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Realization of phase locking in good-bad-cavity active optical clock   The residual cavity-pulling effect limits further narrowing of linewidth in
dual-wavelength (DW) good-bad-cavity active optical clocks (AOCs). In this
paper, we for the first time experimentally realize the cavity-length
stabilization of the 1064/1470 nm DW-AOCs by utilizing the phase locking
technique of two independent 1064 nm good-cavity lasers. The frequency tracking
accuracy between the two main-cavities of DW-AOCs is better than $3 \times
{10^{ - 16}}$ at 1 s, and can reach $1 \times {10^{ - 17}}$ at 1000 s. Each
1470 nm bad-cavity laser achieves a most probable linewidth of 53 Hz, which is
about a quarter of that without phase locking. The influence of the
asynchronous cavity-lengths variation between two DW laser systems is
suppressed.

5
The categories of this paper are: gr-qc
0
The categories of this paper are: hep-ph
25
The categories of this paper are: patt-sol
18
The categories of this paper are: econ
30
The categories of this paper are: q-alg
14
The categories of this paper are: math-ph
12
The categories of this paper are: nucl-th
22
The categories of this paper are: chao-dyn
15
The categories of this paper are: nucl-ex
32
The categories of this paper are: atom-ph
11
The categories of this paper are: hep-lat
24
The categories of this paper are: dg-ga
26
The categories of this paper are: bayes-an
17
The categories of this paper are: q-fin
6
The categories of this paper are: astro-ph
1
The categories of this paper are: cs