Open AccessIntegrated multiple wavelength stabilization on a multi-channel cavity for a transportable optical clock
Author(s) -
Shaomao Wang,
Jianzhong Cao,
Jinbo Yuan,
Daoxin Liu,
Shu Hong,
Xiaoyang Huang
Publication year - 2020
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.383115
Subject(s) - optics , laser linewidth , laser , wavelength , metrology , channel (broadcasting) , realization (probability) , physics , atomic clock , optoelectronics , computer science , telecommunications , statistics , mathematics
We present a simple, compact, and efficient scheme for integrated multiple wavelength stabilization and continuous operation of a transportable 40 Ca + optical clock using a multi-channel cavity. The fractional frequency instability of 729 nm clock laser is ∼ 1.5 ×10 -15 at 10 s with an approximate linewidth of 1 Hz. Meanwhile, frequency fluctuations of all the other lasers are less than ± 330 kHz/day. The one-day stability of this clock is measured as ∼ 5 ×10 -17 through 72 h continuous operation. This scheme is potentially useful for the realization of next-generation transportable optical clocks and other metrological systems.