Abstract
We report supercontinuum generation and pulse compression in two stacked multipass cells based on dielectric mirrors. The 230fs pulses at 1 MHz containing 12 µJ are compressed by a factor of 33 down to 7fs, corresponding to 1.0GW peak power and overall transmission of 84%. The source is particularly interesting for such applications as time-resolved angle-resolved photoemission spectroscopy (ARPES), photoemission electron microscopy, and nonlinear spectroscopy.
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