Optical clocks surpass the primary Cs microwave clocks with excellent performances. This allows new studies both in
fundamental physics and engineering. The paper presents the optical system for our space optical clock at NTSC.
Different from it in the laboratory, novel approaches and techniques were used to meet the space requirement of
compactness and reliability. The modular consisting of three robust subunits was developed, which was one laser sources
breadboard and two optical paths systems breadboards. The compact dimension of the optical system is
540mm×440mm×130mm and the total mass was approximate 28 kilogram. The deformation of two optical paths
systems was calculated under an overload test by a mechanical analysis and it could meet the requirement. It is a
advancement from lab to engineering application based on the work, which provides effective foundation for improving
the optical system.
At present the optical clock with accuracy and stability achieves to 10-18 level, which could be the next generation of time and frequency standard. This paper gives an introduction of the progress of researching on the optical lattice clock of Strontium atom in NTSC (National Time Service Center). We realize the (5s5s)1S0—(5s5p)1P1 cooling (blue MOT) and (5s5s)1S0—(5s5p)3P1 cooling (red MOT) in succession for the optical lattice clock, and loading these cold atoms in a lattice composed by a magic wave-length is studied. By using our narrow line-width diode laser and the fiber femtosecond optical frequency comb, we precisely measure the absolute frequencies of the inter-combination transitions (5s5s)1S0—(5s5p)3P1 of four isotopes of Strontium referenced to an H maser.
Access to the requested content is limited to institutions that have purchased or subscribe to SPIE eBooks.
You are receiving this notice because your organization may not have SPIE eBooks access.*
*Shibboleth/Open Athens users─please
sign in
to access your institution's subscriptions.
To obtain this item, you may purchase the complete book in print or electronic format on
SPIE.org.
INSTITUTIONAL Select your institution to access the SPIE Digital Library.
PERSONAL Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.