Photonics Institute, Vienna University of Technology, Gusshausstrasse 27-387, A 1040, Vienna, Austria.
Opt Lett. 2011 May 15;36(10):1914-6. doi: 10.1364/OL.36.001914.
Here, 200 fs 6 mJ pulses from a cw diode-pumped Yb,Na:CaF(2) amplifier are spectrally broadened in an Ar- or Ne-filled hollow-core fiber and recompressed to 20 fs (Ar) and 35 fs (Ne) using a prism pair. The results of spectral broadening and phase measurement are in excellent agreement with numerical modeling based on the generalized nonlinear Schrödinger equation. The longer laser wavelength of 1030 nm permits favorable energy scaling for the hollow-fiber technique compared to ultrafast amplifiers operating at 800 nm.
这里，来自连续波二极管泵浦 Yb、Na：CaF2放大器的 200fs 6mJ 脉冲在充满 Ar 或 Ne 的空心光纤中实现光谱展宽，并使用一对棱镜压缩至 20fs（Ar）和 35fs（Ne）。光谱展宽和相位测量的结果与基于广义非线性薛定谔方程的数值模拟非常吻合。与工作在 800nm 的超快放大器相比，1030nm 的较长激光波长允许空心光纤技术进行有利的能量缩放。
