Abstract

The criterion for optimizing the high-power acousto-optically ${Q}$-switched self-Raman yellow laser is originally explored for the repetition rate within 100–500 kHz. The minimum allowed value for the gate-open time is experimentally verified to be determined by the pulse buildup time. By using the minimum allowed gate-open time, the highest conversion efficiency can be achieved to raise the output power by approximately 20% in comparison with the conventional results. At a repetition rate of 200 kHz, the maximum output power at 588 nm can be up to 8.8 W at an incident pump power of 26 W. Furthermore, a practical formula is developed to accurately calculate the threshold pump power as a function of the gate-open time for a given repetition rate.

© 2020 Optical Society of America

Powerful Q-switched Raman laser at 589 nm with a repetition rate between 200 and 500 kHz

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