摘要
引入材料色散和漏泄模式光线的传输效应,对D.Gloge多模光纤脉冲响应公式进行修正,利用修正后公式数值计算了在闪烁光激励下纤芯半径为0.1mm、长50m的石英阶跃光纤的冲击响应波形,该波形近似一高斯函数,半高宽为3ns,前沿比后沿慢0.8ns,且后沿存在拖尾。用该响应波形通过数值方法得到了闪烁体-光纤系统时间响应波形,与实验结果相比较,两者基本吻合。
Considering material dispersion and tunneling ray, the D. Gloge＇s theory formula of time response of muhimode step-index fiber is modified. The modified formula is used to calculate the function of time response of 50 m long, 0.2 mm core diameter step-index fiber with scintillator illumination. Results show that it is near a Gaussian distribution with FWHM 3.0 ns, the pulse risetime is more than the falling time and the falling time has a trailing. Time response of scintillator-fiber system is modeled by numerical method, the results of modeling accords with experimental results.
出处
《强激光与粒子束》
EI
CAS
CSCD
北大核心
2009年第3期341-344,共4页
High Power Laser and Particle Beams
基金
西北核技术研究所预研基金资助课题(70020805)
