Tunable and near-fourier-limited few-cycle mid-IR pulses via an adiabatically chirped difference frequency grating

摘要

A μJ-level source of few-cycle, mid-IR pulses tunable over 2–4 microns is demonstrated based on adiabatic difference frequency generation. This opens up the possibility for single-cycle mid-IR pulses controllable by a near-IR phase shaper.