FIELD: physics, optics.
SUBSTANCE: invention relates to gyrolasers. The gyrolaser comprises a ring-shaped optical cavity comprising three mirrors and a solid state amplifying medium pumped by a laser diode. The gyrolaser relates to class B and is a laser for which the response time of population inversion is very high in comparison with the other characteristic times, which are the lifetime of the coherences and the characteristic damping time of the cavity. The gyrolaser has a means of measuring the difference in optical frequency existing between the two optical modes. The gyrolaser also has a means of measuring the total optical power circulating in the optical cavity and a first means of controlling the current delivered by the supply source in such a way as to maintain the total optical power substantially constant. The first means of controlling current is optimised to operate in a first frequency band substantially centred on the relaxation frequency of the laser and of width 1/(4πT1), T1 being the response time of the population inversion in the amplifying medium.
EFFECT: improved inertial characteristics of the gyrolaser.
3 cl, 1 dwg
