, Volume 37, Issue 1, pp 11-16

The fast frequency stabilisation of an argon laser to an optical resonator using an extra-cavity electro-optic modulator

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A frequency stabilisation system for an argon laser is described, incorporating a fast piezoelectrically driven laser mirror and an extracavity electro-optic phase shifter. We show that results obtained with this method are potentially as good as those reported from systems which use fast intra-cavity modulators. This technique avoids the loss associated with an intra-cavity device, thus allowing higher power output, and so making it an attractive alternative to present stabilisation systems.