Open AccessGeneration of 578-nm yellow light over 10 mW by second harmonic generation of an 1156-nm external-cavity diode laser
Author(s) -
Won-Kyu Lee,
Chang Yong Park,
Dai-Hyuk Yu,
Sang Eon Park,
Sang-Bum Lee,
Taeg Yong Kwon
Publication year - 2011
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.19.017453
Subject(s) - optics , second harmonic generation , laser , materials science , optoelectronics , diode , lithium niobate , high harmonic generation , physics
578-nm yellow light with an 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, which is the highest output power at this wavelength using second harmonic generation of a solid state laser source without an enhancement ring cavity, to our knowledge. To achieve this result we made a high power 1156-nm external-cavity diode laser with the maximum output power of more than 250 mW. This system is expected to be an excellent alternative to the system using the sum-frequency generation with the advantage of simplicity and cost-effectiveness, and will be used as a clock laser of the ytterbium optical lattice clock with robust and reliable operation.