Spatial temporal wave mixing for space time conversion.
Spatial temporal wave mixing for space time conversion.
复制标题
DOI：
10.1364/ol.24.000563
复制
发表时间：
1999-04
期刊：
影响因子：
3.6
通讯作者：
D. Marom;D. Panasenko;P. Sun;Y. Fainman
中科院分区：
文献类型：
--
作者：
D. Marom;D. Panasenko;P. Sun;Y. Fainman
提出了一种能够将空域图像真正实时转换为超快时间域光波形的非线性光学处理器。该方法基于光谱分解的超短脉冲的光波和空间傅里叶变换的准单色图像之间的四波混频。为了实现高效率的飞秒混频，我们在具有第二类位相匹配的β-硼酸钡晶体中采用了级联二阶非线性排列。我们使用这种超快技术，通过级联的非线性排列，实验产生了几个复幅时间波形，效率高达10%。
A nonlinear optical processor that is capable of true real-time conversion of spatial-domain images to ultrafast time-domain optical waveforms is presented. The method is based on four-wave mixing between the optical waves of spectrally decomposed ultrashort pulses and spatially Fourier-transformed quasi-monochromatic images. To achieve efficient wave mixing at a femtosecond rate we utilize a cascaded second-order nonlinearity arrangement in a beta-barium borate crystal with type II phase matching. We use this ultrafast technique to experimentally generate several complex-amplitude temporal waveforms, with efficiency as high as 10%, by virtue of the cascaded nonlinearity arrangement.