期刊
PHYSICAL REVIEW LETTERS
卷 84, 期 22, 页码 5102-5105出版社
AMERICAN PHYSICAL SOC
DOI: 10.1103/PhysRevLett.84.5102
关键词
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We demonstrate a great simplification in the long-standing problem of measuring optical frequencies in terms of the cesium primary standard. An air-silica microstructure optical fiber broadens the frequency comb of a femtosecond laser to span the optical octave from 1064 to 532 nm, enabling us to measure the 282 THz frequency of an iodine-stabilized Nd:YAG laser directly in terms of the microwave frequency that controls the comb spacing. Additional measurements of established optical frequencies at 633 and 778 nm using the same femtosecond comb confirm the accepted uncertainties for these standards.
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