量子电子学报, 2005, 22 (2): 173, 网络出版: 2006-05-15
超短脉冲激光特性的三阶相关测量研究
Measurement of femtosecond laser pulses with third order correlation technique
摘要
在飞秒激光放大系统研制以及激光与物质相互作用研究过程中,良好的脉冲对比度是十分重要的一个指标,为了准确地测定激光对比度,我们利用非线性晶体对激光强度变化十分敏感的特性,研制了一台三阶相关仪,并对一台飞秒激光器进行了脉冲对比度的测量研究,所得结果揭示出了二阶相关仪所无法得到的信息,为测量飞秒激光脉冲的对比度提供了一种简便的方法.
Abstract
A third-order correlator is built based on the technique of cross-correlation between the fundamental and second harmonic waves of femtosecond lasers. Using this correlator, the contrast ratio of femtosecond (fs) laser pulses from a typical Ti:Sapphire laser is measured. The measurements show detail features of the fs laser pulses. This also provide an effective way to meansure the contrast ratio of amplified fs laser pulses.
王兆华, 王鹏, 魏志义, 张杰. 超短脉冲激光特性的三阶相关测量研究[J]. 量子电子学报, 2005, 22(2): 173. 王兆华, 王鹏, 魏志义, 张杰. Measurement of femtosecond laser pulses with third order correlation technique[J]. Chinese Journal of Quantum Electronics, 2005, 22(2): 173.
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