The nonlinear mechanism is the excitonic band broadening.
非线性机制为激子带展宽。
At low magnetic field, the effects of magnetic-field-induced confining potential on the main features of the excitonic spectra are negligible.
在较低磁场下，其引入的限制势对激子吸收谱的主要特性的影响可以忽略。
Since core-level excitation is not involved in the process related to IPES, signal distortion caused by excitonic effects is not present in IPES.
由于过程中不包括芯能级激发，因此可避免芯能级激发时伴随的“驰豫过程”引起的信号失真。
Starting from excitonic model, we derived a set of mathematical formulas for describing the third - order nonlinear optical process in polydiacetylene crystals.
从激子模型出发，建立了一套描述聚丁二炔晶体中的三阶非线性光学过程的数学公式；
The heavy and light hole excitonic transition structures 11H, 22H, 33H and 11L were observed and the theoretical calculations , including the strain effects, were performed.
观测到11H、22H、33H和11L等激子跃迁结构。 计及晶格失配导致的应力效应，对子能级结构进行了理论计算。
The heavy and light hole excitonic transition structures 11H, 22H, 33H and 11L were observed and the theoretical calculations , including the strain effects, were performed.
观测到11H、22H、33H和11L等激子跃迁结构。 计及晶格失配导致的应力效应，对子能级结构进行了理论计算。
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