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We design and develop a new clock laser system for the second Yb optical lattice clock (OLC) at KRISS with the targeted uncertainty of 10−18 level. With a longer ULE cavity, the fused silica substrates, and the crystalline mirror coatings, the overall thermal limit is expected to be 4.3×10−17. The rapid evaluation of the systematic uncertainties of the second OLC will be possible with this new clock...
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...
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