Competition of Generation on Two Transitions with a Common Upper Level in a Traveling Wave Maser

I. V. Rogova

D. N. Makovetskii, Alexander A. Lavrinovich

D. S. Bakaev, Yu. A. Vdovin

An analysis is made of competition between modes emitted due to adjacent transitions having a common upper level. Conditions are obtained for the onset of lasing due to one transition in the presence of lasing of arbitrary intensity due to the other transition in standing- and traveling-wave lasers. Both transitions were assumed to be homogeneously broadened. Allowance is made for level degeneracy, collisional broadening of the dipole-forbidden transition between the lower active levels, and collisions with the buffer gas that equalize the populations of the lower active levels. The ranges of single-mode and two-mode lasing are determined as a function of the radiation intensity, the spectroscopic parameters of the transitions, and their collisional broadening.

Ya I Khanin

Yu. A. Vdovin, V. M. Ermachenko, I P Konovalov +1 more

An analysis is made of the method for measuring the relaxation constants of a common level in resonance interaction of two opposite traveling waves with a three-level system, based on the modulation of the polarization of one of the waves. The results for the 3 s 2 level of neon, obtained experimentally for the 3 s 2 –3 p 2 and 3 s 2 –3 p 4 transitions, were in agreement with the values obtained earlier by other methods.

V. G. Doronin, E. P. Ostapchenko