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0.26-Hz-linewidth ultrastable lasers at 1557 nm

Narrow-linewidth ultrastable lasers at 1.5 μm are essential in many applications such as coherent transfer of light through fiber and precision spectroscopy. Those applications all rely on the ultimate performance of the lasers. Here we demonstrate two ultrastable lasers at 1557 nm with a most proba...

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Detalles Bibliográficos
Autores principales: Wu, Lifei, Jiang, Yanyi, Ma, Chaoqun, Qi, Wen, Yu, Hongfu, Bi, Zhiyi, Ma, Longsheng
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Nature Publishing Group 2016
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4847006/
https://www.ncbi.nlm.nih.gov/pubmed/27117356
http://dx.doi.org/10.1038/srep24969
Descripción
Sumario:Narrow-linewidth ultrastable lasers at 1.5 μm are essential in many applications such as coherent transfer of light through fiber and precision spectroscopy. Those applications all rely on the ultimate performance of the lasers. Here we demonstrate two ultrastable lasers at 1557 nm with a most probable linewidth of 0.26 Hz by independently frequency-stabilizing to the resonance of 10-cm-long ultrastable Fabry-Pérot cavities at room temperature. The fractional frequency instability of each laser system is nearly 8 × 10(−16) at 1–30 s averaging time, approaching the thermal noise limit of the reference cavities. A remarkable frequency instability of 1 × 10(−15) is achieved on the long time scale of 100–4000 s.