Simultaneous measurement of pure-optical and thermo-optical nonlinearities induced by high-repetition-rate, femtosecond laser pulses:: application to CS2
Simultaneous measurement of pure-optical and thermo-optical nonlinearities induced by high-repetition-rate, femtosecond laser pulses:: application to CS2
复制标题
DOI：
10.1007/s003400050785
复制
发表时间：
1999-08-01
影响因子：
2.1
通讯作者：
Salvetti, G
中科院分区：
文献类型：
--
作者：
Falconieri, M;Salvetti, G
提出了一种简单的实验技术，可以将材料在高重复率激光照射下的非线性响应中纯光学克尔效应的贡献与热光学效应的贡献分离开来。该技术是将单光束z扫描方法与单光束热透镜测量方法相结合实现的。我们通过分析CS2在770nm处的非线性响应来证明这一技术，当以76 mhz重复频率的非常强飞秒激光脉冲照射CS2时，CS2表现出累积热效应。
A simple experimental technique is presented capable of separating the contribution of purely optical Kerr effects from that of thermo-optical effects in the nonlinear response of materials under high-repetition-rate laser irradiation. The technique has been realized by combining the single-beam Z-scan method with the single-beam thermal lens measurement method. We demonstrate this technique by analysing the nonlinear response at 770 nm of CS2 which exhibits cumulative thermal effects when irradiated by very intense femtosecond laser pulses at a 76-MHz repetition rate.