Bistability in wavelength using an electro-optically tuned dye laser

Bistability in wavelength is demonstrated using a Rh 6 G dye laser tuned electro-optically with an intra-cavity modulator. Laser emission occurs on two wavelengths that can be switched between them by a change in the level of light input. Multistable mode is also possible. The characteristics of the system are discussed. They show that the discrimination between the two wavelengths attached to the stable states can be performed easily. Further prospects deal with bulk systems operating with low driving voltages.