Generation of frequency-domain phase-conjugation wave in non-resonant by coherence transformation

我们的研究目的是通过相干变换实现频域相位共轭波对非谐振介质中群延迟色散的自动补偿。FDPC波是信号波的时间反转复制品，并在再次通过相同的GDD元素后再生初始脉冲形状。我们提出了双光子门控脉冲记录和时间反转回放的新方案来产生FDPC波。在实验中，我们证明了用双光子门控衍射光学系统可以实现10fs激光脉冲的脉冲再生。我们的部分研究内容如下：提出了一种补偿啁啾脉冲放大系统中高阶群延迟色散的新方案。提出了一种补偿啁啾脉冲放大系统中高阶群延迟色散的新方案。用双光子门控方案证明了光折变介质中的飞秒脉冲放大。测量了32太赫兹的增益带宽。

Objective of our research is automatic compensation of GDD (group-delay-dispersion) by FDPC (frequency-domain phase-conjugation) wave in non-resonant media by coherence transformation. The FDPC wave is time reversed replica of a signal wave and regenerate initial pulse shape after passing through again the same GDD elements. We have proposed new scheme, two-photon gated pulse recording and time-reversed play back, to generate the FDPC wave. In experiments, we have demonstrated that pulse regeneration of a 10fs laser pulse with the two-photon gated diffractive optics. Part of our research is as the follows:2. A new scheme to compensate higher order group-delay-dispersion in a CPA (chirped-pulse-amplification) has been proposed.2. A new scheme to compensate higher order group-delay-dispersion in a CPA(chirped-pulse-amplification) has been proposed.3. Femtosecond pulse amplification in a photorefractive medium has been demonstrated by the two-photon gated scheme. The gain bandwidth of 32 THz has been measured.