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Optical output stabilization method for direct current arc lamps

机译：直流弧光灯的光输出稳定方法

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A simple, effective technique for stabilizing the optical output of direct current (dc) arc lamps is described. The large output fluctuation due to arc wander in a commercially available lamp and power supply is minimized by the introduction of an alternating current (ac) waveform superimposed on the dc source voltage in conjunction with detector averaging. Arc stability is monitored indirectly by the detection of arc excited fluorescence from a standard sample. The monitored lamp output is typically maintained to within 1% relative standard deviation (RSD) by this method. Data are presented supporting the theory that arc wander is significantly reduced by the addition of an ac component to the dc lamp power. Various methods of ac introduction are discussed along with the design of a controllable oscillator circuit. The effects of variations in ac voltage and frequency on optical output stability are examined.
机译：描述了一种用于稳定直流（dc）弧光灯的光输出的简单有效的技术。通过引入叠加在dc电源电压上的交流（ac）波形以及检测器平均，可以将由于市售灯和电源中的电弧漂移而引起的大输出波动降至最低。通过检测标准样品中的电弧激发荧光来间接监测电弧稳定性。通过这种方法，通常将监视的灯的输出保持在相对标准偏差（RSD）的1％以内。提出了支持以下理论的数据：通过在直流灯功率中增加交流分量，可以大大减少电弧漂移。讨论了各种交流引入方法以及可控振荡器电路的设计。研究了交流电压和频率变化对光输出稳定性的影响。

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