Holmgren S J, Canalias C, Pasiskevicius V
Department of Applied Physics, Royal Institute of Technology (KTH), Stockholm, Sweden.
Opt Lett. 2007 Jun 1;32(11):1545-7. doi: 10.1364/ol.32.001545.
Second-order nonlinearities localized in the regions adjacent to the ferroelectric domain wall in KTiOPO(4) are used to realize a single-shot noncollinear frequency-resolved optical gating arrangement for ultrashort pulse characterization with high spatial resolution. Cerenkov phase matching is utilized to achieve spectral dispersion and makes the same nonlinear crystal applicable over wide spectral ranges from the visible to the mid-infrared.
利用磷酸钛氧钾（KTiOPO₄）中铁电畴壁附近区域的二阶非线性效应，实现了一种用于超短脉冲表征的单次非共线频率分辨光学门控装置，具有高空间分辨率。利用切伦科夫相位匹配来实现光谱色散，使同一非线性晶体适用于从可见光到中红外的宽光谱范围。
