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根据宽带激光在均匀加宽线型增益介质中的放大理论模型,采用短时傅里叶变换算法数值模拟了相位调制的光脉冲通过再生放大器传输放大后的时间波形,分析了再生放大过程中各个参数对幅度调制效应的影响。计算结果表明,调节光脉冲中心波长使之与增益介质中心波长匹配,提高注入种子脉冲的能量都能够有效地降低再生放大器中的幅度调制效应,提高光束质量。
According to the amplified theoretical model of wideband laser in a uniformly widened linear gain medium, the short-time Fourier transform algorithm is used to numerically simulate the phase modulated optical pulse transmitted through the regenerative amplifier to amplify the time waveform, Effect of Parameters on Amplitude Modulation. The results show that adjusting the central wavelength of the optical pulse to match the center wavelength of the gain medium and increasing the energy of the injected seed pulse can effectively reduce the amplitude modulation effect in the regenerative amplifier and improve the beam quality.