New experimental results are presented which show the behavior of a homogeneously broadened ring dye laser both below and above the threshold for the onset of the two-frequency instability. It is shown that the spectrum of the output of the laser is extremely sensitive to the detuning of the initial lasing frequency from the center of the gain curve. Spectral splittings as large as 340 A are reported. The close connection between this instability and the production of femtosecond mode-locked laser pulses is discussed.
C R Stroud,
Lloyd W Hillman,
"Multimode Instabilities In Cw Dye Lasers", Proc. SPIE 0667, Optical Chaos, (14 October 1986); doi: 10.1117/12.938845; https://doi.org/10.1117/12.938845