Grün A, Austin Dane R, Cousin Seth L, Biegert J
Opt Lett. 2015 Oct 15;40(20):4679-82. doi: 10.1364/OL.40.004679.
Nonlinear pulse compression mediated by three-wave mixing is demonstrated for ultrashort Ti:sapphire pulses in a type II phase-matched β-barium borate (BBO) crystal using noncollinear geometry. 170 μJ pulses at 800 nm with a pulse duration of 74 fs are compressed at their sum frequency to 32 fs with 55 μJ of pulse energy. Experiments and computer simulations demonstrate the potential of sum-frequency pulse compression to match the group velocities of the interacting waves to crystals that were initially not considered in the context of nonlinear pulse compression.
利用非共线几何结构，在II型相位匹配的β-硼酸钡（BBO）晶体中，对超短钛宝石脉冲实现了由三波混频介导的非线性脉冲压缩。800 nm处脉宽为74 fs的170 μJ脉冲在其和频处被压缩至32 fs，脉冲能量为55 μJ。实验和计算机模拟表明，和频脉冲压缩有潜力使相互作用波的群速度与最初在非线性脉冲压缩背景下未被考虑的晶体相匹配。
