Femtosecond pulse source based on soliton filtering from a supercontinuum generated in a microstructured fiber
J. Licea Rodríguezª, K. Garay Palmettb, and R. Rangel Rojoª
ª Centro de Investigación Científica y de Educación Superior de Ensenada, Apartado Postal 2732, Ensenada B.C., 22860, México. E–mails: jlicea@cicese.mx ; rrangel@cicese.mx
b Instituto de Ciencias Nucleares, Universidad Nacional Autónoma de México, Apartado Postal 70–543, México DF. 04510, México. E–mail: karinerger@gmail.com
Recibido el 18 de marzo de 2010 ]]> Aceptado el 25 de mayo de 2010
Abstract
In this article we report the implementation of a tunable source of ultrashort pulses, based on the generation of a supercontinuum in a photonic crystal fiber, using sub–100 fs pulses from a Ti:sapphire oscillator, and filtering the soliton with the longest wavelength out of the continuum. Using a zero dispersion filtering system we were able to get a pulse duration close to the minimum possible for the soliton. The pulses obtained were continuously tunable in the 850–1100 nm range, and tuning was achieved by input pulse energy variation. We present a complete characterization of the filtered pulses and show that the experimental results have a qualitative agreement with theory.
Keywords: Optical solitons; ultrashort pulses; solitons in optical fibers.
Resumen
En este artículo reportamos la implementación de una fuente sintonizable de pulsos ultracortos, basada en la generación de un supercontinuo en una fibra de cristal fotónico, usando pulsos de 100 fs de un oscilador de Ti:zafiro, y filtrando el solitón con la mayor longitud de onda del continuo. Usando un sistema de filtrado de cero dispersión pudimos obtener una duración del pulso cercana a la mínima posible para el solitón. Los pulsos obtenidos fueron continuamente sintonizables en el rango de 850–1100 nm, la sintonización se logró variando la energía de los pulsos de entrada. Presentamos una caracterización completa de los pulsos filtrados y mostramos que los resultados experimentales tienen buena coincidencia con la teoría.
Descriptores: Solitones ópticos; pulsos ultracortos; solitones en fibras ópticas.
]]> PACS: 42.65.Tg; 42.65.Re; 42.81.Dp
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Acknowledgments
We want to acknowledge CONACYT–Mexico for partial funding for this work through Grant No. 46492
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