Two - photon absorbed organic materials and application in three - dimensional digital optical data storage 雙光子吸收有機(jī)材料及其在三維數(shù)字光存儲(chǔ)中的應(yīng)用
Nowadays , many experimental measurements of tpa cross sections of organic molecules take place in solutions 目前,有機(jī)分子的雙光子吸收性質(zhì)都是在溶劑中測(cè)量的。
In the first chapter , nonlinear optics and the research of two - photon absorption materials are introduced 第一章主要介紹了非線性光學(xué)和雙光子吸收材料的研究現(xiàn)狀。
And someone found that symmetry molecule ' s tpa cross section is larger than asymmetry molecule ' s 還有人發(fā)現(xiàn),對(duì)稱(chēng)型分子比不對(duì)稱(chēng)型分子更有利于增大分子的雙光子吸收截面。
However , the development of two - photon technology is confined because of the small tpa cross sections of materials 然而,由于一般材料的雙光子吸收截面很小,雙光子吸收的實(shí)際應(yīng)用受到限制。
Furthermore , with the increase of the polarity of solvent , the excited energies is decreased and the tpa cross section is increased 而且,隨著溶劑極性的增加,激發(fā)態(tài)的激發(fā)能減小,雙光子吸收截面增大。
The results show that the solutions hardly change the structure of molecules , but have a significant effect on the two - photon absorption of molecules 計(jì)算結(jié)果表明,溶劑對(duì)分子的幾何結(jié)構(gòu)影響很小,但對(duì)分子的雙光子吸收有較大的影響。
Recently , with the development of experiments , numerous organic materials that exhibit large tpa cross sections have been synthesized in different laboratories 近年來(lái),隨著實(shí)驗(yàn)技術(shù)的日益發(fā)展,實(shí)驗(yàn)合成了大量具有大雙光子吸收截面的有機(jī)材料。
It is show that , for the ultraviolet pre - ionization tea co2 laser , the absorption of two photos in the process of the photo - ionization plays an important role 研究表明,在紫外預(yù)電離teaco _ 2激光器中的光離化過(guò)程中雙光子吸收起著十分重要的作用。