Temperature- and wavelength-insensitive parametric amplification enabled by noncollinear achromatic phase-matching.
Temperature- and wavelength-insensitive parametric amplification enabled by noncollinear achromatic phase-matching.
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DOI：
10.1038/srep36059
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发表时间：
2016-10-27
影响因子：
4.6
通讯作者：
Qian L
中科院分区：
文献类型：
--
作者：
Tang D;Ma J;Wang J;Zhou B;Xie G;Yuan P;Zhu H;Qian L
光学参数啁啾脉冲放大（OPCPA）已被证明是将飞秒脉冲推向超高峰值功率的一种很有前途的方法。然而，OPCPA未来的成功很大程度上依赖于操作其相位匹配（PM）配置的能力。当使用高平均功率泵浦激光器时，非线性晶体中的热效应会引起相位失配畸变，从而限制了激光器的转换效率。在这里，我们证明了以前用于波长不敏感的PM的非线性共线配置可以用于温度不敏感的PM，当非线性共线角被适当重置时。通过施加这种具有角分散种子信号的温度不敏感的非线性结构，首次实现了同时对温度和波长不敏感的PM。基于三硼酸锂晶体，所提出的非共线消色差PM的热接受度是传统波长不敏感的非共线PM的6倍，并且具有足够的光谱接受度来支持800 nm的~20 fs脉冲持续时间。这些成就为产生具有高平均功率的超高峰值功率激光器开辟了新的可能性。
Optical parametric chirped-pulse amplification (OPCPA) has been demonstrated to be a promising approach for pushing femtosecond pulses towards ultra-high peak powers. However, the future success of OPCPA strongly relies on the ability to manipulate its phase-matching (PM) configuration. When a high average power pump laser is involved, the thermal effects in nonlinear crystals induce phase-mismatch distortions that pose an inherent limitation on the conversion efficiency. Here, we demonstrate that the noncollinear configuration previously adopted for wavelength-insensitive PM can be employed for temperature-insensitive PM when the noncollinear angle is properly reset. Simultaneous temperature- and wavelength-insensitive PM is realized for the first time by imposing such a temperature-insensitive noncollinear configuration with an angularly dispersed seed signal. Based on the lithium triborate crystal, the proposed noncollinear achromatic PM has a thermal acceptance 6 times larger than that of the conventional wavelength-insensitive noncollinear PM and has a sufficient spectral acceptance to support pulse durations of ~20 fs at 800 nm. These achievements open new possibilities for generating ultra-high peak power lasers with high average power.
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影响因子：
16.6
作者：
Kuznetsov, Ilya;Filevich, Jorge;Dong, Feng;Woolston, Mark;Chao, Weilun;Anderson, Erik H.;Bernstein, Elliot R.;Crick, Dean C.;Rocca, Jorge J.;Menoni, Carmen S.
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Menoni, Carmen S.
影响因子：
3.6
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Matsushima, I;Yashiro, H;Tomie, T
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影响因子：
3.8
作者：
Tavella, F.;Willner, A.;Rossbach, J.
通讯作者：
Rossbach, J.
影响因子：
3.8
作者：
Tavella, Franz;Marcinkevicius, Andrius;Krausz, Ferenc
通讯作者：
Krausz, Ferenc
影响因子：
2.1
作者：
Varjú, K;Kovács, AP;Osvay, K
通讯作者：
Osvay, K