激光波长对杂散光及信噪比的影响十分显著，当狭缝宽度不变时，用氩激光514.5nm比用488.0nm波长激发样品，杂散光要小一到二个数量级（±100cm-1范围内），并且分辨率有所提高。
并且随激发波长的增长，蓝移减小。
The blue shift is reduced with increase of exciting wavelength.
另外，外电场对TCNQ分子的激发波长也产生了一定影响。
Other, the electric fields have some effect on the wavelengths of TCNQ.
结果表明：含荧光基团的共聚物的激发波长与发射波长基本与荧光单体相同。
The results showed that the excited and the emitted wavelength of the copolymers containing fluorescent monomer were the same as those of the monomers respectively.
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