Title: Effective gain spectra vary the pulses spectrum in a mode-locked cavity Show Chinese title

Title: 有效增益谱在锁模腔中改变脉冲的光谱

Abstract: Filters typically play a crucial role in generating solitons by strictly confirming the working wavelength in a mode-locked laser. However, we have found that the broad smoothing filter with saturable gain also helps to regulate the pulses' operating wavelength. The effective gain, formed by the original gain spectrum and filters, shifts its center based on pulse energy, thereby affecting the pulse spectrum. A virtual mode-locked cavity is established to verify this approach in simulation. The results indicate that the spectrum changes with pulse energy, leading to a wider spectrum output. Our method paves the way for further investigations of the pulse spectrum and provides a practical approach to generating pulses at specific wavelengths. Show Chinese abstract

Abstract: 滤波器通常在通过严格确认锁模激光器的工作波长来生成孤子中起关键作用。 然而，我们发现具有饱和增益的宽平滑滤波器也有助于调节脉冲的工作波长。 由原始增益谱和滤波器形成的有效增益会根据脉冲能量改变其中心位置，从而影响脉冲光谱。 建立了一个虚拟的锁模腔以在仿真中验证此方法。 结果表明，光谱随着脉冲能量变化，导致输出光谱更宽。 我们的方法为进一步研究脉冲光谱开辟了道路，并提供了一种在特定波长生成脉冲的实用方法。