Abstract
Far-infrared (FIR) lasers have recently proved to be effective tools for the experimental investigation of nonlinear laser dynamics. We derive the equations that model two types of FIR lasers: one depicting an NH3 laser using a three-level scheme and the other depicting a CH3F laser using a four-level scheme. We next perform a systematic study of the time development of the field, the medium polarization, and the molecular inversion, and then present the Fourier spectra. The routes to chaos are investigated using a linear stability analysis and a Lyapunov exponent calculation.
© 1991 Optical Society of America
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