Liu Jun, Okamura Kotaro, Kida Yuichiro, Teramoto Takahiro, Kobayashi Takayoshi
Advanced Ultrafast Laser Research Center, University of Electro-Communications, Chofugaoka 1-5-1, Chofu, Tokyo 182-8585 Japan.
Opt Express. 2010 Sep 27;18(20):20645-50. doi: 10.1364/OE.18.020645.
Clean 7.5 fs pulses at 400 nm with less than 3% energy in tiny satellite pulses were obtained by spectral broadening in a hollow fiber and dispersive compensating using a prism pair together with a deformable mirror system. As an example, this stable and clean pulse was used to study the ultrafast pump-probe spectroscopy of photoactive yellow protein. Moreover, the self-diffraction signal shows a smoothed and broadened laser spectrum and is expected to have a further clean laser pulse, which makes it more useful in the ultrafast pump-probe spectroscopy in the future.
通过在空心光纤中进行光谱展宽，并使用棱镜对和可变形镜系统进行色散补偿，获得了中心波长为400 nm、脉宽7.5 fs、微卫星脉冲能量低于3%的干净脉冲。作为示例，该稳定且干净的脉冲被用于研究光活性黄色蛋白的超快泵浦-探测光谱。此外，自衍射信号呈现出平滑且展宽的激光光谱，预计会产生更干净的激光脉冲，这使其在未来的超快泵浦-探测光谱中更有用。
