Laser locking to the Hg-199 S-1(0)-P-3(0) clock transition with 5.4x10(-15)/root tau fractional frequency instability
| Contribuinte(s) |
UNIVERSIDADE DE SÃO PAULO |
|---|---|
| Data(s) |
12/08/2013
12/08/2013
2012
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| Resumo |
With Hg-199 atoms confined in an optical lattice trap in the Lamb-Dicke regime, we obtain a spectral line at 265.6 nm for which the FWHM is similar to 15 Hz. Here we lock an ultrastable laser to this ultranarrow S-1(0) - P-3(0) clock transition and achieve a fractional frequency instability of 5.4 x 10(-15) / root tau for tau <= 400 s. The highly stable laser light used for the atom probing is derived from a 1062.6 nm fiber laser locked to an ultrastable optical cavity that exhibits a mean drift rate of -6.0 x 10(-17) s-(1) (-16.9 mHzs(-1) at 282 THz) over a six month period. A comparison between two such lasers locked to independent optical cavities shows a flicker noise limited fractional frequency instability of 4 x 10(-16) per cavity. (c) 2012 Optical Society of America IFRAF IFRAF CNES CNES |
| Identificador |
OPTICS LETTERS, WASHINGTON, v. 37, n. 17, supl. 2, Part 1-2, pp. 3477-3479, SEP 1, 2012 0146-9592 |
| Idioma(s) |
eng |
| Publicador |
OPTICAL SOC AMER WASHINGTON |
| Relação |
OPTICS LETTERS |
| Direitos |
openAccess Copyright OPTICAL SOC AMER |
| Palavras-Chave | #ATOMIC CLOCKS #LATTICE CLOCK #DECIMAL PLACE #METROLOGY #STANDARD #LINK #OPTICS |
| Tipo |
article original article publishedVersion |
