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首页> 外文期刊>Applied optics >EXTRACTION EFFICIENCY OF SATURATED-GAIN HIGH-POWER DYE LASER AMPLIFIERS - EFFECT OF NONLINEAR SIGNAL ABSORPTION
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EXTRACTION EFFICIENCY OF SATURATED-GAIN HIGH-POWER DYE LASER AMPLIFIERS - EFFECT OF NONLINEAR SIGNAL ABSORPTION

机译：饱和增益高功率染料激光放大器的提取效率-非线性信号吸收的影响

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摘要

The effect of nonlinear signal absorption (NLSA) due to ground-state absorption and excited-state absorption in a transversely pumped high-power dye laser amplifier is theoretically examined with a one-dimensional steady-state model for a dye amplifier pumped by a copper vapor laser. A well-approximated analytical expression for the extraction efficiency is derived, from which the effect of NLSA in reducing the amplifier efficiency can be appreciated immediately and can also be interpreted in terms of certain characteristic lengths. The reduction in efficiency due to NLSA is found to be largely independent of the pump power, provided that the signal power is increased linearly with the pump power to continue to saturate the amplifier gain and suppress amplified spontaneous emission. [References: 17]
机译：理论上用一维稳态模型对铜泵浦的染料放大器的一维稳态模型研究了横向泵浦大功率染料激光放大器中由于基态吸收和激发态吸收引起的非线性信号吸收（NLSA）的影响蒸气激光。得出了提取效率的近似解析表达式，从中可以立即了解到NLSA在降低放大器效率方面的效果，并且还可以根据某些特征长度进行解释。如果信号功率随泵浦功率线性增加以继续使放大器增益饱和并抑制放大的自发发射，则发现由于NLSA而导致的效率降低在很大程度上与泵浦功率无关。 [参考：17]

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