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首页> 外文学位 >On the performance characteristics of multiple pass hydrogen fluoride chemical laser master oscillator/power amplifiers.
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On the performance characteristics of multiple pass hydrogen fluoride chemical laser master oscillator/power amplifiers.

机译：关于多路氟化氢化学激光主振荡器/功率放大器的性能特征。

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摘要

The performance of a cw Hydrogen Fluoride (HF) chemical laser master oscillator with power amplifier was measured as a function of input power, the number of passes through the gain media, location of the optical axis of the input beam and oscillator/amplifier flow field match/mismatch. The amplification ratio is an inverse function of the input power (intensity) and, for maximum amplification, the peak of the intensity distribution must be matched to the peak of the zero power gain distribution in the amplifier. The measured single pass P{dollar}sb{lcub}rm out{rcub}{dollar} versus P{dollar}sb{lcub}rm in{rcub}{dollar} performance curve showed that, after a continuous increase, the difference P{dollar}sb{lcub}rm out{rcub} cdot{dollar} P{dollar}sb{lcub}rm in{rcub}{dollar} remained almost constant over a wide range of input powers and that about one third of a device's oscillator output must be input to obtain single pass amplifier output equal to the device's oscillator performance. For two pass amplification, a substantial performance advantage was measured when the two passes overlapped at least sixty percent and filled less than eighty percent of the zero power gain zone of the amplifier. The measured two pass P{dollar}sb{lcub}rm out{rcub}{dollar} versus P{dollar}sb{lcub}rm in{rcub}{dollar} performance curve was significantly above the single pass data and showed that only one sixth of a device's oscillator output must be input to obtain two pass amplifier output equal to the device's oscillator performance.; When the input beam contained time-dependent oscillations, the amplitude modulation of the output beam was reduced by a factor that equaled the amplification ratio of the amplifier; the amplifier had no effect on the period (frequency) of the oscillations of the input beam.; An amplifier performance model that predicts a device's amplifier performance given the device's oscillator performance as a function of reflectivity was developed. The model was used to predict amplifier performance as a function of gain length and the number of passes through the gain media. When the amplifier performance is plotted in terms of non dimensional powers, {dollar}zetasb{lcub}rm out{rcub}{dollar} versus {dollar}zetasb{lcub}rm in{rcub}{dollar}, gain length dependent, device independent curves result. The non dimensional amplifier performance curves showed that a one meter oscillator may be able to drive as many as twelve two pass amplifiers.
机译：测量带有功率放大器的连续氟化氢（HF）化学激光主振荡器的性能，它是输入功率，通过增益介质的次数，输入光束光轴的位置以及振荡器/放大器流场的函数匹配/不匹配。放大率是输入功率（强度）的反函数，对于最大放大，强度分布的峰值必须与放大器中零功率增益分布的峰值匹配。测得的单程P {dollar} sb {lcub} rm out {rcub} {dollar}与P {dollar} sb {lcub} rm in {rcub} {dollar}的性能曲线显示，在连续增加后，差异P {dollar} sb {lcub} rm out {rcub} cdot {dollar} P {dollar} sb {lcub} rm in {rcub} {dollar}在很宽的输入功率范围内几乎保持恒定，大约是设备功率的三分之一必须输入振荡器输出以获得等于器件振荡器性能的单通放大器输出。对于两遍放大，当两遍重叠至少60％，并且填充了放大器零功率增益区的80％以下时，就可以测量出明显的性能优势。测得的两次通过P {dollar} sb {lcub} rm out {rcub} {dollar}与P {dollar} sb {lcub} rm in {rcub} {dollar}的性能曲线显着高于单次通过数据，表明仅必须输入器件振荡器输出的六分之一，以获得等于器件振荡器性能的两通放大器输出。当输入光束包含随时间变化的振荡时，输出光束的幅度调制将减小一个等于放大器放大率的因数。放大器对输入光束的振荡周期（频率）没有影响。鉴于放大器的振荡器性能是反射率的函数，开发了一种放大器性能模型，该模型可以预测器件的放大器性能。该模型用于预测放大器性能与增益长度和通过增益介质的次数的关系。当以无量纲功率来表示放大器性能时，与增益长度有关的{dollar} zetasb {lcub} rm out {rcub} {dollar}与{dollar} zetasb {lcub} rm in {rcub} {dollar}独立曲线结果。无量纲放大器的性能曲线表明，一个一米的振荡器可能能够驱动多达十二个两通放大器。

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