Efficient frequency upshift of 10 fs laser pulses propagating in a 5-cm length birefringent photonic crystal fibre  

作　　者：李曙光 张炜 魏志义 周桂耀 侯蓝田 

机构地区：[1]Laboratory of Optical Physics,Institute of Physics,Chinese Academy of Sciences [2]Key Laboratory of Metastable Materials Science and Technology,College of Science,Yanshan University

出　　处：《Chinese Physics B》2009年第5期1996-2001,共6页中国物理B（英文版）

基　　金：supported by the National Natural Science Foundation of China(Grant Nos 10874145 and 60490280);the China Postdoctoral Science Foundation(Grant No 20080440014);the Yanshan University Doctor Foundation of China(Grant No B153)

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.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.

关 键 词：birefringent photonic crystal fibre femtosecond laser pulses frequency upshift 

分 类 号：TN253[电子电信—物理电子学]