Control of laser radiation parameters

Mode locking in a cw solid-state laser by self-focusing under dynamic gain-saturation conditions

N. I. Zhavoronkov, V. L. Kalashnikov, I. G. Poloiko, V. P. Mikhailov

International Laser Center, Belarus State Technical University, Minsk

Abstract: Experimental and theoretical investigations showed that dynamic gain saturation in the presence of self-phase modulation shifts the emission wavelength of ultrashort pulses to the red or blue part of the spectrum of lasers mode-locked by self-focusing. Selection of the ratios of the rates of saturation of the gain and losses in the presence of such a shift makes it possible to increase mode-locking stability.

PACS: 42.55.Rz, 42.60.Fc, 42.65.Re

Received: 04.04.1997

 English version: Quantum Electronics, 1998, 28:2, 139–142

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