{HEAD ~ A discharge excitation type gas laser oscillator} has a discharge excitation unit for exciting a laser gas by discharge in a discharge tube to generate induced emission of laser light, a high frequency power supply unit for supplying power to {TAIL ~ the discharge tube}, and a controller unit for controlling output current of the high frequency power supply unit 
{ HEAD ~ A discharge excitation type gas laser oscillator } has a discharge excitation unit for exciting a laser gas by discharge in a discharge tube to generate induced emission of laser light , a high frequency power supply unit for supplying power to { TAIL ~ the discharge tube } , and a controller unit for controlling output current of the high frequency power supply unit
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