"A novel ultra-broadband transient spectrometer with microsecond measurement range based on a supercontinuum fiber laser"C. Schriever, I. Pugliesi, E. Riedle
Appl. Phys. B 96, 247-250 (2009)
We show that the combination of a free-running 24 kHz supercontinuum fiber laser with a kHz femtosecond laser renders a sensitive and easy to implement transient spectrometer. It can directly extend the observation range of a standard broadband femtosecond spectrometer from the usual limit of a few nanoseconds to 1 millisecond and with the additional use of a chopper to seconds. The transmission signal from all supercontinuum pulses is recorded and assigned to the proper delay time by data post-processing. To demonstrate the performance of the device, the relaxation dynamics of Nd:YAG are measured.
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