摘要
研究了2类以4’(N,N二羟乙基)氨基4硝基偶氮苯功能化的聚酯膜的光学相位共轭波的产生和光致异构。解释了聚酯膜产生饱和吸收和聚酯膜以顺式异构体的单线基态到单线激发态与反式异构体的单线基态到单线激发态的两个独立二能级系统通过光致异构耦合构成的四能级系统的响应特征。研究了膜厚、聚酯结构与泵浦光强对相位共轭波产生的影响。
The optical phase conjugation and photoisomerization of some films of two kinds of polyesters functionalizied by 4 bis(N,N hydroxyethylene) imino 4 nitroazobenzene have been studied.The photoresponsive mechanism of these films was explained quite well by a model of four level energy system,which was consisting of two pairs of siglet states of trans and cis isomers,respectively.Photoismerization was the main intramolecular relaxtion between both two level energy systems.Investigation on effects of pump intensities,polyester structures and thicknees of films has been also carried out.
出处
《激光技术》
CAS
CSCD
北大核心
1997年第5期272-276,共5页
Laser Technology
基金
国家教委博士点专项基金
国家自然科学基金
关键词
光学相位共轭
光致异构
偶氮苯
聚酯膜
optical phase conjugation photoisomerization polyester functionalized by nitroazobenzene