Abstract
We present the overview of our investigations on various operation regimes of solid-state lasers with saturable absorber and an inertial negative feedback loop suppressing Q-switching instability. The stabilized passive mode-locking and the multistable monochromatic generation hold a central position among these regimes. The stabilized passive mode-locking of such solid-state lasers is similar in their characteristics to passive mode-locking of dye lasers: after transient evolution the reproducible regime of single stationary pulse is realized, and extremely short duration of pulses are reached. Another typical instabilities (the self-phase modulation instability and the instability of transverse spatial structure of radiation) are studied and the methods of theirs suppression are investigated. The passive mode-locking in colliding pulse regime is analysed. Experimental peculiarities of stabilized passive mode-locking for various lasers (ruby, Nd:phosphate and Nd:silicate glasses, potassium gadolinium tungstate, Nd:YAG) are presented.
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