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10: Caracterización de pulsos

Última actualización

30 oct 2022
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- 9.4: Peines de Frecuencia Láser de Femtosegundo
- 10.1: Autocorrelación de intensidad

Franz X. Kaertner
Massachusetts Institute of Technology via MIT OpenCourseWare

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La caracterización de pulsos láser ultracortos con anchos de pulso mayores a 20 ps se puede realizar directamente electrónicamente utilizando fotodetectores de alta velocidad y alcances de muestreo. Se encuentran disponibles fotodetectores con ancho de banda de 100 GHz. Para pulsos más cortos generalmente se tiene que realizar algún tipo de autocorrelación o correlación cruzada en el dominio óptico usando efectos ópticos no lineales, es decir, el pulso en sí tiene que usarse para medir su ancho, porque no hay otros eventos controlables disponibles en escalas de tiempo tan cortas.

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