Spectral and spatial full-bandwidth correlation analysis of bulk-generated supercontinuum in the mid-infrared

Abstract : We report the measurement of spectral and spatial correlations in supercontinua generated by focusing microjoule pulses from a femtosecond ytterbium-doped fiber amplifier laser in bulk YAG. The measurement is full-bandwidth at a repetition rate of 1 MHz owing to the use of time-stretch dispersive Fourier transform technique. In contrast with fiber-based supercontinuum generation, our results show an excellent stability of the spectral and spatial properties of the output supercontinuum, with an essentially correlated behavior in the 1.4–1.7 μm wavelength range. These results provide strong ground for the development of supercontinuum-seeded ultrafast optical parametric amplifier systems in the mid-infrared using ytterbium lasers as pump sources.
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Optics Letters, Optical Society of America, 2015, 40 (4), pp.673-676. 〈10.1364/OL.40.000673〉
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Aymeric Van de Walle, Marc Hanna, Florent Guichard, Yoann Zaouter, Alexandre Thai, et al.. Spectral and spatial full-bandwidth correlation analysis of bulk-generated supercontinuum in the mid-infrared. Optics Letters, Optical Society of America, 2015, 40 (4), pp.673-676. 〈10.1364/OL.40.000673〉. 〈hal-01120357〉

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