期刊论文

Liu Wei-Hua

中文

物理学报

1000-3290

2008

57

2

917-922

10.3321/j.issn:1000-3290.2008.02.046

国家自然科学基金（批准号:60408002,60537060）资助的课题.~~；

本校为通讯机构

使用钛宝石激光器抽运一根长1m的高非线性光子晶体光纤,获得的超连续谱波长覆盖范围为420—1700nm,输出功率为170mW,转换效率在20%以上;对实验结果给出了详细的分析,并与理论模拟结果相比较,认为超连续谱产生的主要原因是高阶孤子的分裂和四波混频效应.同时研究了不同抽运功率和不同抽运波长下超连续谱产生的情况,发现对同一根光纤,抽运功率由小到大变化时,可将输出的光谱分为初始展宽,剧烈展宽和饱和展宽三个阶段,当输出的光谱处于初始展宽和饱和展宽阶段时,都会存在一定的抽运残留,当输出的光谱处于剧烈展宽时,转换效率最高;当抽运波长位于光纤的反常色散区时,得到的超连续谱要远宽于位于零色...

We pumped aim long highly nonlinear photonic crystal fiber by a Ti: sapphire laser and generated a supercontinuum with the wavelength extension form 420-1700 nm, of which the output power was about 170 mW and we conversion efficiency was above 20%. The experiment result was particularly analyzed and compared with calculated result, and we consider the main reasons of supercontinuum generation was fission of high-order solitons and four-wave mixing. We also researched the supercontinuum generation under different pump power and wavelength conditions. With the pump power increased gradually in t...