Abstract
We report the generation of ultrabroadband pulses spanning the 50-130 THz frequency range via phase-matched difference frequency mixing within the broad spectrum of sub-10 fs pulses in LiIO(3). Model calculations reproduce the octave-spanning spectra and predict few-cycle THz pulse durations less than 20 fs. The broad applicability of this scheme is demonstrated with 9-fs pulses from a Ti:sapphire oscillator and with 7-fs amplified pulses from a hollow fiber compressor as pump sources.
Highlights
We report the generation of ultrabroadband pulses spanning the 50-130 THz frequency range via phase-matched difference frequency mixing within the broad spectrum of sub-10 fs pulses in LiIO3
While the latter provide high pulse energies, a significantly simpler route involves mixing the components within the broad spectrum of individual fs pulses
Phasematched difference frequency mixing within the broad spectrum of single 13-fs pulses was reported in GaSe,[9,10] providing mid-IR fs pulses tunable from 7–20 μm and a significant boost of IR power
Summary
Ultrabroadband 50-130 THz pulses generated via phase-matched difference frequency mixing in LiIO3 We report the generation of ultrabroadband pulses spanning the 50-130 THz frequency range via phase-matched difference frequency mixing within the broad spectrum of sub-10 fs pulses in LiIO3.
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