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http://cio.repositorioinstitucional.mx/jspui/handle/1002/630| Two distinct noise-like pulsing regimes of a dispersion-managed figure-eight fiber laser | |
| OLIVIER JEAN MICHEL POTTIEZ BALDEMAR IBARRA ESCAMILLA | |
| Acceso Abierto | |
| Atribución-NoComercial-SinDerivadas | |
| Passively mode-locked fiber lasers are versatile and low-cost sources of ultrashort pulses that are attractive for applications. Although initially developed for the generation of extremely short, subpicosecond pulses, these lasers are now also used for the production of longer pulses with very high energies, in particular in the normal dispersion regime [1]. Recently, a novel category of pulses, the noise-like pulses [2-6], have attracted a lot of interest because of their high energy, wide spectrum (potentially beyond 100 nm [4]) and low coherence length, which makes them attractive for important applications such as supercontinuum generation [7] and sensing [8], among others. Fundamentally, a noise-like pulse is a large, ~ns collection of thousands of ultrashort (subps) pulses with randomly varying amplitudes and durations that are packed together. Although the details of the inner pulses are extremely variable in time, the global properties of the noise-like pulse, like its overall duration, average inner pulse duration and spectral width remain constant, so that in a sense noiselike pulsing can still be seen as a stable mode-locking regime. In practice, the noise-like pulsing regime is easily recognized by its double-scaled autocorrelation trace, with a narrow coherence peak riding a wide and smooth pedestal, and by a very smooth optical spectrum. These two basic signatures of this particular mode locking regime are found with very few variations in the literature, in both normal and anomalousdispersion cavities. In this work, we show experimentally that, in spite of this apparent uniformity, two distinct regimes can be distinguished in a passively mode-locked fiber laser, each of them leading to the formation of noiselike pulses but with different properties. | |
| 2014 | |
| Ítem publicado en memoria de congreso | |
| CIENCIAS FÍSICO MATEMÁTICAS Y CIENCIAS DE LA TIERRA | |
| Aparece en las colecciones: | Memorias en Extenso 2014 |
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