Study on relationship between leakage properties and radio frequency power of an acousto-optic <i>Q</i>-switch

MA Chaoqun; ZHANG Ying; WANG Xiaocong; HAN Juhong; CAI He; LIU Xiaoxu; AN Guofei; WANG You

doi:10.7510/jgjs.issn.1001-3806.2021.03.005

LASER TECHNOLOGY > 2021 > 45(3): 298-302. > DOI: 10.7510/jgjs.issn.1001-3806.2021.03.005

MA Chaoqun, ZHANG Ying, WANG Xiaocong, HAN Juhong, CAI He, LIU Xiaoxu, AN Guofei, WANG You. Study on relationship between leakage properties and radio frequency power of an acousto-optic Q-switch[J]. LASER TECHNOLOGY, 2021, 45(3): 298-302. DOI: 10.7510/jgjs.issn.1001-3806.2021.03.005

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Study on relationship between leakage properties and radio frequency power of an acousto-optic Q-switch

Southwest Institute of Technical Physics, Chengdu 610041, China

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Received Date: May 13, 2020
Revised Date: July 08, 2020
Published Date: May 24, 2021

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Abstract

Abstract

To study the influence of radio frequency (RF) power of LD pumped Nd: YVO₄ acousto-optic Q-switch on diffraction efficiency, by adjusting the RF power applied on the Q-switch, the changing trend of the light leakage and the rise time of the laser pulse was obtained and analyzed. The results show that the leakage light completely disappears when the RF power increases to 4.4W, and the leakage power is less than 500mW when the RF power is between 2W~3W. And the rise time of laser pulse is 60%~70% of the time to reach the first threshold. In summary, not only the rise time of the outputted laser pulse train is considered after the door signal is turned on, but also the light leakage power of the laser is kept as low as possible when the Q-switch is set at the so-called hold-off status. The research results have good reference value for the construction of an acousto-optic Q-switched solid-state laser that can be turned on quickly and have a serious thermal effect.
- laser technique,
- acousto-optic Q-switching,
- solid-state laser,
- light leakage,
- gate signal,
- power of radio frequency

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References

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