Manz Jonas, Barbiero Gaia, Klingebiel Sandro, Rampp Michael, Teisset Catherine Y, Wang Haochuan, Ertel Dominik, Shah Ronak N, Hoffmann Martin, Saraceno Clara J, Metzger Thomas
Opt Express. 2025 Jun 16;33(12):24413-24428. doi: 10.1364/OE.561758.
We present a comparative study on nonlinear pulse compression of 10 mJ pulses from a thin-disk amplifier at 5 kHz in a multipass cell using both gaseous and bulk nonlinear media. First, we demonstrate compressibility from 465 fs to 34 fs in an argon filled multipass cell. We then replace the nonlinear medium by bulk material and operate in vacuum. In the latter case and using a single-pass setup, we demonstrate pulse compressibility in bulk material down to 84 fs. Finally, a double-pass configuration is implemented to further enhance spectral broadening, yielding to sub-50 fs pulse durations. Our results establish bulk-based multipass cells as a promising approach to overcoming length scaling limitations of gas-based multipass cell systems for high-energy nonlinear pulse compression.
我们展示了一项关于在多程池中使用气态和块状非线性介质对来自薄盘放大器的10 mJ、5 kHz脉冲进行非线性脉冲压缩的对比研究。首先，我们在充满氩气的多程池中证明了脉冲可从465飞秒压缩至34飞秒。然后，我们用块状材料替换非线性介质并在真空中运行。在后一种情况下，使用单通设置，我们证明了块状材料中的脉冲可压缩至84飞秒。最后，实施了双通配置以进一步增强光谱展宽，产生低于50飞秒的脉冲持续时间。我们的结果表明，基于块状材料的多程池是一种很有前景的方法，可克服基于气体的多程池系统在高能非线性脉冲压缩方面的长度缩放限制。
