The spectra detected from the edge of the sample shows a gain narrowing and a clear threshold when increasing the pump intensity.
当泵浦光强增强时，从样品边缘发射的光谱发生增益窄化并具有明显的阈值特性。
The spectra detected from the edge of the sample shows a gain narrowing and a clear threshold when increasing the pump intensity.
当泵浦光强增强时，从样品边缘发射的光谱发生增益窄化并具有明显的阈值特性。
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