Observation of narrow resonances in the output spectrum of a laser with nonlinear absorption
Bagaev S. N., Dmitriev A. K., Nekrasov Yu. V., Semibalamut V. M., Skvortsov B. N., Chebotaev V. P.
The first direct observation of a new type of nonlinear-absorption resonance is reported. This is a resonance in the output spectrum of a laser with a nonlinear absorption which occurs when the width of the output line is significantly greater than the width of the resonance. Experiments show that at a low gas pressure the width of the resonance for vibrational-rotational transitions of molecules is determined exclusively by the collisional width.