Competition of Generation of Radiation in Two Transitions with the Same Upper State

V. G. Doronin, B. P. Miretskii, E. P. Ostapchenko

Walter Koechner, Michael A. Bass

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.

M. I. Kliot-Dashinskii

Gennadij I. Khvostenko, М. П. Чайка

Nikolay V Znamenskiy, Eduard A. Manykin, D. V. Marchenko +3 more

An investigation was made of the generation of powerful stimulated IR radiation in caesium vapour under conditions of an isolated resonance with a transition between the first excited P state and a high S or D level. The main relationships governing the appearance of stimulated IR radiation were established.