Yamane Keisaku, Zhang Zhigang, Oka Kazuhiko, Morita Ryuji, Yamashita Mikio, Suguro Akira
Department of Applied Physics, Hokkaido University, Kita-13, Nishi-8, Kita-ku, Sapporo 060-8628, Japan.
Opt Lett. 2003 Nov 15;28(22):2258-60. doi: 10.1364/ol.28.002258.
We compensated for chirp of optical pulses with an over-one-octave bandwidth (495-1090 nm; center wavelength of 655.4 nm) produced by self-phase modulation in a single argon-filled hollow fiber and generated 3.4-fs, 1.56 optical-cycle pulses (500 nJ, 1-kHz repetition rate). This was achieved with a feedback system combined with only one 4-f phase compensator with a spatial light modulator and a significantly improved phase characterizer based on modified spectral phase interferometry for direct electric-field reconstruction. To the best of our knowledge, this is the shortest pulse in the visible-to-infrared region.
我们利用单根充氩空心光纤中自相位调制产生的超过一个倍频程带宽（495 - 1090 nm；中心波长655.4 nm）来补偿光脉冲的啁啾，并产生了3.4飞秒、1.56个光学周期的脉冲（500 nJ，1 kHz重复频率）。这是通过一个反馈系统实现的，该系统仅结合了一个带有空间光调制器的4飞秒相位补偿器以及一个基于改进的用于直接电场重建的光谱相位干涉术的显著改进的相位表征器。据我们所知，这是可见光到红外区域中最短的脉冲。
