Liu Jun, Kida Yuichiro, Teramoto Takahiro, Kobayashi Takayoshi
International Cooperative Research Project, Japan Science and Technology Agency, 4-1-8 Honcho, Kawaguchi, Saitama 332-0012, Japan.
Opt Express. 2010 Feb 1;18(3):2495-502. doi: 10.1364/OE.18.002495.
We demonstrated a novel method of simultaneous compression and amplification of a weak laser pulse in a glass plate using cross-phase modulation in conjunction with four-wave optical parametric amplification that was pumped by an intense femtosecond pulse. A proof-of-principle experiment succeeded in smooth broadening of the weak pulse spectrum by a factor of about three and simultaneously amplifying the pulse energy by more than three times. By using chirped mirrors to compensate the dispersion, the weak pulse was compressed from 22.6 fs to 12.6 fs. Furthermore, the output spectrum of seed pulse could be tuned by varying the delay of the intense pump pulse with respect to the weak seed pulse. This method can also be used for simultaneous spectral broadening of several weak beams with different wavelength at the same time.
我们展示了一种在玻璃板中利用交叉相位调制结合由强飞秒脉冲泵浦的四波光学参量放大来同时压缩和放大弱激光脉冲的新方法。原理验证实验成功地将弱脉冲光谱平滑展宽了约三倍，同时将脉冲能量放大了三倍以上。通过使用啁啾镜来补偿色散，弱脉冲从22.6飞秒压缩至12.6飞秒。此外，通过改变强泵浦脉冲相对于弱种子脉冲的延迟，可以调谐种子脉冲的输出光谱。该方法还可用于同时对几个不同波长的弱光束进行光谱展宽。
