Stability and Absolute Frequency of Molecular Iodine Transitions near 532 nm

摘要

A frequency doubled Nd:YAG laser has been stabilized to hyperfine transitions inI sub 2 near 532 nm via modulation transfer spectroscopy. This technique, together with the low noise of the source, yields excellent S/N ratio (500 in a 3 kHz bandwidth). Thus an impressive frequency stability (Allan variance < 1 x 10(exp-13) for tau=ls) is achieved. The nearly systematic free resonance signals obtained by modulation transfer spectroscopy give an correspondingly encouraging