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Síntesis de la frecuencia óptica y comparación con la incertidumbre en el nivel 10 (((-19))
Long-Sheng Ma1, Zhiyi Bi, Albrecht Bartels
1Bureau International des Poids et Mesures (BIPM), Pavillon de Breteuil, 92312 Sèvres, France. lsma@phy.ecnu.edu.cn
Science (New York, N.Y.)
|March 20, 2004
Resumen
Los sintetizadores de frecuencia láser de cinco segundos logran un control sin precedentes sobre los campos electromagnéticos. Este avance ofrece incertidumbres fraccionadas de 1 parte en 1019) para la generación de frecuencias ópticas.
Área de la Ciencia:
- La óptica cuántica es una óptica cuántica.
- Física del láser Física del láser
- Metrología de la metrología.
Sus antecedentes:
- Los peines de frecuencia óptica son herramientas esenciales para mediciones de alta precisión.
- Los métodos existentes se enfrentan a limitaciones en el ancho de banda y la incertidumbre para la generación de frecuencias.
Objetivo del estudio:
- Para demostrar un sintetizador de frecuencia óptica basado en láser de femtosegundos con un rendimiento superior.
- Para lograr la generación precisa y el control de los campos electromagnéticos en un ancho de banda amplio.
Principales métodos:
- La referencia de un láser de femtosegundo a un estándar óptico.
- Utilizando el ancho de banda amplio del láser para la síntesis de frecuencias.
- Comparación de resultados de diferentes laboratorios y tipos de sintetizadores.
Principales resultados:
- Generación y control de campos electromagnéticos de más de 100 THz de ancho de banda.
- Se alcanzaron incertidumbres fraccionarias cercanas a 1 parte en 1019).
- Reproducibilidad de rendimiento verificada a través de múltiples sistemas láser de femtosegundo.
Conclusiones:
- Los sintetizadores de frecuencia láser de femtosegundos ofrecen una plataforma robusta para la generación de frecuencia óptica de alta precisión.
- El rendimiento demostrado representa un avance significativo en la metrología.
- Las comparaciones entre laboratorios confirman la fiabilidad y reproducibilidad de esta tecnología.
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