We evaluate and demonstrate ultra-broadband near-infrared noncollinear optical parametric amplification in two nonlinear crystals, bismuth borate (BiBO) and yttrium calcium oxyborate (YCOB), which are not commonly used for this application. The spectral bandwidth is of the microjoule level; the amplified signal is ≥ 200 nm, capable of supporting sub-10 fs pulses. These results, supported by numerical simulations, show that these crystals have a great potential as nonlinear media in both low-energy, few-cycle systems and high peak power amplifiers for terawatt to petawatt systems based on noncollinear optical parametric chirped pulse amplification (NOPCPA) or a hybrid.

中文翻译：

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基于非线性晶体BiBO和YCOB的超宽带近红外NOPA

我们评估并演示了两种非线性晶体硼酸铋 (BiBO) 和硼酸钇钙 (YCOB) 中的超宽带近红外非共线光学参量放大，这两种晶体不常用于此应用。光谱带宽为微焦级；放大后的信号≥200 nm，能够支持sub-10 fs脉冲。这些结果得到数值模拟的支持，表明这些晶体在基于非共线光学参量啁啾脉冲放大 (NOPCPA) 的太瓦至拍瓦系统的低能量、少周期系统和高峰值功率放大器中具有作为非线性介质的巨大潜力或混合动力车。