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Apparatus and method of laser power and frequency stabilization of radio frequency excited laser using optogalvanic effect
Apparatus and method of laser power and frequency stabilization of radio frequency excited laser using optogalvanic effect
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机译:利用光电效应的射频激励激光器的激光功率和频率稳定化的装置和方法
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摘要
An apparatus for and a method of stabilizing the laser power and frequency of a radio frequency excited laser, which are adapted to lock the laser power and frequency of the laser at the vertex of a laser gain curve using an optogalvanic effect generated from the laser itself, thereby stabilizing the laser power and frequency without requiring any specific unit to be arranged inside or outside a cavity of the laser. A capacitor is coupled to a radio frequency inlet of the radio frequency discharge tube. The capacitor serves to induce a part of radio frequency energy, introduced into the radio frequency discharge tube, toward a detector, so that the optogalvanic signal is measured, based on the induced signal, after removing radio frequency components from the induced signal by the detector, thereby enabling a measurement of a variation in input radio frequency energy caused by the optogalvanic effect. Accordingly, it is possible to provide a stable, simple and compact laser exhibiting an improved laser efficiency.
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