| 500 kHz波长锁定878.6 nm LD双端泵浦Nd:YVO4声光调Q激光器 |
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| 引用本文： | 范灏然,于永吉,朱贺,邢爽,王宇恒,金光勇.500 kHz波长锁定878.6 nm LD双端泵浦Nd:YVO4声光调Q激光器[J].红外与激光工程,2018,47(6):606001-0606001(7). |
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| 作者姓名： | 范灏然 于永吉 朱贺 邢爽 王宇恒 金光勇 |
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| 作者单位： | 1.长春理工大学 理学院 吉林省固体激光技术与应用重点实验室,吉林 长春 130022; |
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| 基金项目： | 国家自然科学基金（61505013）;吉林省科技厅自然基金（20160101331JC）;吉林省科技厅人才团队（20170519007JH）;吉林省科技厅青年基金（20150520103JH）;吉林省科技厅重点科技攻关（20170204046GX） |
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| 摘 要： | 报道了一种由波长锁定878.6 nm LD双端抽运Nd:YVO4声光调Q激光器，重复频率在500 kHz时具有稳定的1 064 nm脉冲激光输出。在重频为100 kHz，晶体吸收功率58 W时，获得18.2 W的1 064 nm激光输出，光-光转换效率为31.3%，脉宽为15.2 ns；在重频为500 kHz、晶体吸收功率58 W时，获得26.1 W的1 064 nm激光输出，光-光转换效率为45%，脉宽为44.2 ns，重频在100~500 kHz下具有稳定的脉冲输出，光束质量较传统模式下有明显提高，并且转换效率也有提升。实验表明:利用波长锁定878.6 nm激光二极管直接泵浦的方式，有利于降低晶体热效应、提高光束质量，提高光-光转换效率，获得窄脉宽的脉冲激光输出，并且在一定的温度变化范围内具有极好的温度稳定性。
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| 关 键 词： | 波长锁定878.6 nm双端泵浦 Nd:YVO4晶体 低热效应 500 kHz |
| 收稿时间： | 2018-01-05 |
500 kHz A-O Q-switched Nd:YVO4 laser pumped by dual-end wave-locked 878.6 nm laser diode |
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| Affiliation: | 1.Jilin Key Laboratory of Solid Laser Technology and Application,School of Science,Changchun University of Science and Technology,Changchun 130022,China;2.Changchun High-tech Industry Development Zone Management Committee,Changchun 130012,China |
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| Abstract: | A dual-end-pumped acousto-optics Q-switched Nd:YVO4 laser pumped by a wave-locked 878.6 nm laser diode can stable work at a repetition of 500 kHz at 1 064 nm. At the repetition frequency of 100 kHz, an output power of 18.2 W at 1 064 nm for an absorbed pump power of 58 W,corresponding to an optical to optical efficiency of 31.3%,the pulse width was 15.2 ns. At the repetition frequency of 500 kHz, an output power of 26.1 W at 1 064 nm for an absorbed pump power of 58 W, corresponding to an optical to optical efficiency of 45%, the pulse width was 44.2 ns, the stable working range extended from 100 to 500 kHz, and the beam quality was significantly improved compared with the traditional mode, and the transfer efficiency was also improved. The experiment shows that taking advantage of direct pumping by wave-locked 878.6 nm laser diode is helpful to reduce the heat effect of crystals, improve beam quality and optical to optical efficiency, and get more narrow pulse width laser output, and it has excellent temperature in a certain range. |
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