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

研究的目的是利用相干变换实现非共振介质中FDPC波对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元素后重新生成初始脉冲形状。我们提出了双光子选通脉冲记录和时间反转回放的新方案来产生FDPC波。在实验中，我们用双光子选通衍射光学系统实现了10fs激光脉冲的脉冲再生。主要研究内容如下：2.提出了一种新的线性调频脉冲放大系统中高阶群时延色散补偿方案。提出了一种补偿啁啾脉冲放大中高阶群延迟色散的新方案。用双光子选通方案实现了飞秒脉冲在光折变介质中的放大。测量了32 THz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.