| 摘要 |
A laser arrangement for the stabilization of the frequency of a one or two mode gas laser, particularly a short He-Ne laser, where the stimulated medium is arranged between a fixed mirror and a mirror which is displaceable by means of a piezo-ceramic in the axial direction of the laser, the laser beams discharging from the partially transparent fixed mirror being used to generate a DC voltage control signal which is proportional to the frequency deviation of the laser beams with respect to the central frequency of the amplifying transfer, returning the resonator to the central frequency by way of the piezo-ceramic, in the control circuit which contains a photosensitive element and subsequent amplifiers and phase sensitive demodulators. The stimulated medium is arranged, at least partially, in a magnetic coil which is excited to generate an axis-parallel alternating magnetic field. A lambda 4 plate and a polarization device are arranged between the fixed partially transparent mirror and the photo-sensitive element.
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