Diode laser frequency stabilization for a Ca optical clock
Stoehr, H.; Degenhardt, C.; Lisdat, Ch.; Sterr, U.; Helmcke, J.
Quantum Electronics Conference, 2003. EQEC apos;03. European
Volume , Issue , 22-27 June 2003 Page(s): 264 -
Digital Object Identifier  
Summary:Frequency stabilization of extended-cavity diode lasers at 657 nm to the Hz-level is reported. Using the Pound-Drever-Hall technique the lasers are locked to high-finesse Fabry-Perot cavities made of ULE (ultra low expansion glass). The cavities are isolated against vibrations passively with a one stage spring suspension inside an acoustic damping box resting on the optical table. Thus cavity accelerations on the μg-level and below are achieved. The temperature of the reference cavities is stabilized by the use of active and passive temperature stabilization.

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