The molecule has the largest two - photon absorption cross section among its series of studied derivatives.

该分子在相应系列衍生物中具有最大的双光子吸收截面.

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Linear absorption, single - photon induced fluorescence, two - photon induced fluorescence and two - photon absorption cross section ( σ2 ) are experimentally studied.

测试了紫外吸收光谱 、 单光子荧光光谱 、 双光子荧光光谱及双光子吸收截面.

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Intervening ethynyl unit is beneficial to extend the conjugated pathway, and increase the two - photon absorption cross - section.

插入乙炔基有利于扩大共轭范围, 增加分子的双光子吸收截面.

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