Laser source at 578 nm for an Yb optical lattice clock using second harmonic generation of a diode laser

Author

Lee, Won-Kyu ; Park, Chang Yong ; Yu, Dai-Hyuk ; Park, Sang Eon ; Lee, Sang-Bum ; Kwon, Taeg Yong

Author_Institution

Center for Time & Freq., Korea Res. Inst. of Stand. & Sci., Daejeon, South Korea

fYear

2012

fDate

1-6 July 2012

Firstpage

606

Lastpage

607

Abstract

A laser source at 578 nm with output power of more than 10 mW was obtained using a waveguide periodically-poled-lithium-niobate crystal as a nonlinear medium for second harmonic generation. To achieve this result, we made a high power 1156-nm external-cavity diode laser with maximum output power of more than 250 mW. This system is expected to be an excellent alternative to systems using sum-frequency generation with advantages of simplicity and cost-effectiveness, and will be used as a clock laser of an ytterbium optical lattice clock with robust and reliable operation.

Keywords

atomic clocks; laser cavity resonators; laser reliability; lithium compounds; optical harmonic generation; optical lattices; semiconductor lasers; waveguide lasers; ytterbium; LiNbO₃; Yb; clock laser; cost-effectiveness; high power external-cavity diode laser; laser output power; laser source; nonlinear medium; reliable operation; robust operation; second harmonic generation; sum-frequency generation; waveguide periodically-poled-lithium-niobate crystal; wavelength 1156 nm; wavelength 578 nm; ytterbium optical lattice clock; Clocks; Lattices; Optical fibers; Power generation; Semiconductor lasers; Waveguide lasers; Clock laser; Diode laser; Optical lattice clock; Second harmonic generation; Yellow light; Ytterbium;

fLanguage

English

Publisher

ieee

Conference_Titel

Precision Electromagnetic Measurements (CPEM), 2012 Conference on

Conference_Location

Washington, DC

ISSN

0589-1485

Print_ISBN

978-1-4673-0439-9

Type

conf

DOI

10.1109/CPEM.2012.6251075

Filename

6251075