论文标题
不断发展的强度双光束的强度连贯性
Waves in intensity coherence of evolving intense twin beams
论文作者
论文摘要
信号和惰轮之间印有印记的牢固相关性主要决定了双束的特性。它们还负责在双子梁的波形空间中观察到的强度连贯性的波，该梁在泵耗尽的情况下在非线性晶体中传播。这些波开始以某些双梁强度开始发展，并从信号和惰轮中心向尾部移动。它们通过测量局部修改的$ \ bar {g}^{（2）} $函数的测量在远场中监测的相干体积的变化来表现出来，该$ \ bar {g}^{（2）} $函数是一种敏感且稳定的工具，用于研究场强度相干性。
Strong correlations between the signal and idler beams imprinted during their generation dominantly determine the properties of twin beams. They are also responsible for the waves in intensity coherence observed in the wave-vector space of a twin beam propagating in a nonlinear crystal in the regime with pump depletion. These waves start to develop at certain twin-beam intensity and move from the signal and idler beam centers towards their tails. They manifest themselves via the change of coherence volume monitored in the far field by the measurement of local modified $ \bar{g}^{(2)} $ function, which acts as a sensitive and stable tool for investigating field intensity coherence.
