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首页> 外文会议>Lasers and Electro-Optics Society Annual Meeting >Femtosecond pulse propagation in the gain region of laser amplifiers and applications to subpicosecond switching
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Femtosecond pulse propagation in the gain region of laser amplifiers and applications to subpicosecond switching

机译：激光放大器的增益区域和应用于偶像交换的飞秒脉冲传播

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Summary form only given. It has recently been predicted that femtosecond laser pulses with high enough intensity tuned inside the gain region should actually be absorbed rather than being amplified. This effect was explained as resulting from an interplay between the gain and absorbing regions. Pulses that are tuned inside the gain region interact resonantly with the gain states and nonresonantly with the absorbing states. These noninverted states behave like detuned absorbers in the temporal regions of adiabatic following. We have done experiments to investigate these effects. We tuned a self-modelocked Ti:sapphire laser operating at 90 MHz across the bandedge of a laser diode with 30 mA of injection current. The laser was tuned to the peak of the gain, and the transmission of the laser diode as a function of input pulse energy was measured. The laser diode initially exhibits gain saturation as the input pulse energy is increased, but rather than asymptotically approaching unity gain, the output pulse energy continues to decrease as the pulse undergoes induced absorption. We present our spectral hole burning measurements in the gain region.
机译：摘要表格仅给出。它最近预测，在增益区域内调谐足够高的强度的飞秒激光脉冲应实际上被吸收而不是被放大。由于增益和吸收区域之间的相互作用而解释了这种效果。在增益区域内调谐的脉冲共谐振地与增益状态相互作用，并不与吸收状态无创。这些不逆转的状态表现在绝热后的颞区中的失谐吸收剂。我们做了实验来调查这些效果。我们调整了一种自模型Ti：蓝宝石激光器在90 MHz上运行，穿过激光二极管的BANDEDGE，其中30 mA的喷射电流。测量激光器调谐到增益的峰值，并且测量激光二极管的传输作为输入脉冲能量的函数。当输入脉冲能量增加时，激光二极管最初表现出增益饱和，而不是渐近接近的单位增益，随着脉冲经历诱导的吸收，输出脉冲能量继续降低。我们在增益区域中展示了我们的光谱孔燃烧测量。

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