Abstract

In a solid-state laser incident on a ${\text{LiNdP}}_{\text{4}}{\text{O}}_{\text{12}}$ crystal, pumped by a short light pulse, giant pulse oscillation without the use of resonator Q switching is realized. Tuning of the oscillation pulse duration from $2\text{\hspace{0.17em} up}$ to 20 ns is achieved by changing the cavity length from 24 to $\text{3 mm}$, respectively. Our analysis of this mode of laser radiation is made on the basis of the rate equations. The factors influencing oscillation pulse duration are investigated. It is shown that in a limiting case the minimal value of the pulse duration is limited by only the rate of excitation transfer from the pumping band to the metastable level.

© 2006 Optical Society of America

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