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Mitigación de la inestabilidad de modos transversales en fibras activas dopadas con Yb mediante regulación
Optics express
|December 19, 2025
Resumen
La Inestabilidad de Modos Transversales (TMI) en láseres de fibra dopados con Yb se mitiga optimizando el dopaje de Yterbio (Yb3+) con fósforo y flúor. Este enfoque a nivel de material mejora la eficiencia del láser y las capacidades de escalabilidad de potencia.
Área de la Ciencia:
- Física de Láseres
- Ciencia de Materiales
- Ingeniería Óptica
Sus antecedentes:
- La Inestabilidad de Modos Transversales (TMI) limita la escalabilidad de los láseres de fibra dopados con Yb (YDF) de alta potencia y la calidad del haz.
- Las estrategias actuales de mitigación de TMI no abordan sus orígenes a nivel de material.
Objetivo del estudio:
- Suprimir la TMI a nivel de material en láseres YDF.
- Mejorar las capacidades de escalabilidad de potencia y la calidad del haz de los láseres YDF.
Principales métodos:
- Se construyó un entorno rico en fósforo de Yterbio (Yb3+) en YDF.
- Se ajustó con precisión la relación de dopaje P/Al y el contenido de flúor en YDF.
- Se utilizaron YDF de doble revestimiento diseñados a medida en un sistema MOPA de fibra completa.
Principales resultados:
- Se logró una supresión efectiva de la TMI.
- Se mejoró la eficiencia óptico-óptica del 64,7% al 77,9%.
- Se aumentó el umbral de TMI de 1,9 kW a 3,3 kW.
Conclusiones:
- La optimización de la composición del dopante estabiliza el estado de valencia de Yb3+ y mitiga la TMI.
- La regulación multicomponente es crucial para mejorar el rendimiento de los láseres YDF.
- Proporciona una base para la optimización de materiales y aplicaciones de láseres YDF de alta potencia.
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