Generating few-cycle pulses for nanoscale photoemission easily with an erbium-doped fiber laser.
Generating few-cycle pulses for nanoscale photoemission easily with an erbium-doped fiber laser.
复制标题
使用掺铒光纤激光器轻松生成纳米级光电发射的少周期脉冲。
作者：
Sebastian Thomas;R. Holzwarth;P. Hommelhoff
我们演示了一种简单的装置，能够产生中心波长为1700 nm的四周期脉冲，用于纳米级光电发射。放大掺铒光纤激光器的脉冲在高度非线性光纤中传播后光谱展宽。随后，我们利用两种不同类型玻璃中的色散来压缩脉冲。通过测量干涉自相关迹线并将其与数值模拟进行比较来估计脉冲长度。我们展示了高度非线性的光电发射电子从纳米钨尖在一个迄今为止尚未探索的脉冲参数范围。
We demonstrate a simple setup capable of generating four-cycle pulses at a center wavelength of 1700 nm for nanoscale photoemission. Pulses from an amplified erbium-doped fiber laser are spectrally broadened by propagation through a highly non-linear fiber. Subsequently, we exploit dispersion in two different types of glass to compress the pulses. The pulse length is estimated by measuring an interferometric autocorrelation trace and comparing it to a numerical simulation. We demonstrate highly non-linear photoemission of electrons from a nanometric tungsten tip in a hitherto unexplored pulse parameter range.
影响因子：
35
作者：
Krauss, Guenther;Lohss, Sebastian;Leitenstorfer, Alfred
通讯作者：
Leitenstorfer, Alfred