中国物理B ›› 2009, Vol. 18 ›› Issue (5): 1996-2001.doi: 10.1088/1674-1056/18/5/044
周桂耀1, 侯蓝田1, 张炜2, 魏志义2, 李曙光3
Li Shu-Guang(李曙光)a)b)†, Zhang Wei(张炜)a), Wei Zhi-Yi(魏志义)a), Zhou Gui-Yao(周桂耀)b), and Hou Lan-Tian(侯蓝田)b)
摘要: This paper reports that a 5-cm length birefringent photonic crystal fibre is used to tune the output frequency of unamplified 10-fs Ti:sapphire pulses. The zero dispersion of the fibre is at 823~nm and 800~nm for slow and fast fundamental modes, respectively. It is demonstrated that efficient upshift of the output frequency can be achieved when the pumped radiation is polarized along the slow axis of the fibre. When the average input power reaches 320~mW, about 60% of the output energy is located in one peak at 600~nm and is accompanied by depletion of the pulse inside the anomalous dispersion region.
中图分类号: (Photonic crystal lasers and coherent effects)