WAYS OF DIFFERENTIAL CONTROL OF THE INVERSION OF THE POPULATION OF THE LASER ENVIRONMENT AND THEIR IMPLEMENTING DEVICES

摘要

1. A method of differential control of the population inversion of a laser medium, consisting of spectral analysis of a branch of the power of amplified spontaneous emission (ASE) during pumping, by relative comparison of the ASE spectrum density in two regions: long-wave and short-wave, by narrow-band filtering at the inputs of two optoelectronic converters, connected to a.ts.p. a controller that controls pumping and / or the master oscillator. ! 2. The method of differential control of the population inversion of the laser medium according to claim 1, in which map parts of the spectrum from two regions in the vicinity of the maximum spectral densities. ! 3. The method of differential control of the population inversion of the laser medium according to claim 1, in which the relative comparison is performed synchronously over two regions of the ASE spectrum in the form of a ratio of amplitudes corresponding to the spectral densities or as a difference on an decibel scale. ! 4. The method of differential control of the population inversion of the laser medium according to claim 1, which is used as one of a number of laser materials:! - glass! - single crystal,! - optical fiber, quartz or sapphire, or polymer. ! 5. The method of differential control of the population inversion of a laser medium according to claim 4, in which laser materials are used containing metals from the group of rare earths, in particular Er, Yb. ! 6. The method of differential control of the inversion of the population of the laser medium according to claim 5, in which they control the excess of the permissible pump level in the conditions of continuous or pulsed laser generation, or optical amplification. ! 7. The method of differential control of the inversion of us