摘要
研究了反式—4—{[p—(N,N—二羟乙基胺基)偶氮苯]乙烯基}吡啶在N,N—二甲基甲酰胺(DMF)中的光限幅性能。实验结果表明,该偶氮化合物的DMF溶液对波长为532nm,脉冲宽度为8ns的激光脉冲具有很强的光限幅特性。理论分析表明,光限幅效应主要起源于材料的双光子吸收。利用双光子吸收模型拟合光限幅实验数据得到材料的双光子吸收系数β=1.6×10-9cm/W。
The optical limiting property of the trans-4-{ [p-（N, N-dihych, xyethylamino）azobenzebe} pyridine solution in DMF was investigated using a Nd： YAG laser system with pulse width of 8 ns at 532 nm wavelength. The results show that the azo compound DMF solution has strong optical limiting progeny and the optical limiting arises mainly from two photon absorption. The two-photon absorption coefficient β is obtained to be 1.6×10^-9cm/W by fitting the experimental result.
出处
《光学技术》
EI
CAS
CSCD
北大核心
2007年第1期122-123,共2页
Optical Technique
关键词
偶氮化合物
光限幅
双光子吸收
azo compound
optical limiting
two photon absorption
