Phase-matched nonlinear diffraction.
Phase-matched nonlinear diffraction.
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DOI：
10.1364/ol.36.001933
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发表时间：
2011-05
期刊：
影响因子：
3.6
通讯作者：
A. Shapira;A. Arie
中科院分区：
文献类型：
--
作者：
A. Shapira;A. Arie
我们报告一个新的（据我们所知）配置，将双折射和准相位匹配，使有效的相位匹配的非线性衍射在一维周期性极化非线性晶体。我们演示的方法实验，显示出有效的非线性衍射的前几个订单中的两种类型的晶体，MgO掺杂的同成分的LiNbO_3和同成分的LiNbO_3，并表征其效率依赖于基本功率，传播角，和晶体温度。这种配置可以提高非线性衍射实验中观察到的效率，使铁电畴表征非线性显微镜，并可用于确定周期性极化的非线性晶体的占空比。
We report on a new (to our knowledge) configuration incorporating both birefringence and quasi-phase-matching, enabling efficient phase-matched nonlinear diffraction in one-dimensional periodically poled nonlinear crystals. We demonstrate the method experimentally, showing an efficient nonlinear diffraction to the first few orders in two types of crystals, MgO doped congruent lithium niobate and congruent lithium niobate, and characterize its efficiency dependence on the fundamental power, the propagation angle, and the crystal temperature. This configuration can increase efficiencies observed in nonlinear diffraction experiments, enables ferroelectric domain characterization by nonlinear microscopy, and can be used to determine the duty cycles of periodically poled nonlinear crystals.