Abstract

We have developed a Cr:LiSrGaF₆ laser that produces, in $Q$-switched operation, four times as much energy (12 $\mathit{\mu }\mathrm{J}$ at 10 kHz) as a Cr:LiSrAlF₆ laser under the same conditions of pumping (four red diodes emitting 400 mW). By using a theoretical model for small-signal gain calculations, we show that these better performances are mainly attributable to the fact that thermal quenching of fluorescence is lower in Cr:LiSrGaF₆ than in Cr:LiSrAlF₆.

© 1997 Optical Society of America

Ultralow-pump-threshold, femtosecond Cr³⁺:LiSrAlF₆ laser pumped by a single narrow-stripe AlGaInP laser diode

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