FIELD: physics.
SUBSTANCE: method for differential control of population inversion of the laser medium involves spectral analysis of the tapped portion of spontaneous radiation power during pumping through relative comparison of optical spectrum densities of spontaneous radiation in two regions: long-wave and short-wave. Spectral regions in the vicinity of maximum spectrum densities are compared.
EFFECT: high stability of operation of the laser and higher power thereof.
6 cl, 7 dwg
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