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中文摘要：
基于超短脉冲非线性传输过程的空间分裂和级联非共线二阶非线性过程，可以在二阶非线性介质中直接产生二维多色阵列。所形成的二维瞬态光栅可以利用同步注入的超连续白光进行探测，并实现二维多色阵列上转换放大。利用相对强度很弱的二次谐波，可以对二维多色阵列及其上转换放大进行有效控制。
英文摘要：
Two dimensional multicolored transverse arrays have been demonstrated experimentally with pump intensities much lower than the material damage thresholds in quadratic nonlinear media based on quadratic nonlinearities. The 2D transient gratings formed could be probed with synchronized supercontinuum pulses, resulting in 2D multicolored up-converted parametric amplification. By seeding with a weak second harmonic beam, the 2D arrays could be suppressed in a controllable way.
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