The acousto-optic Q-switched mode-locking Nd:YVO₄ laser

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• 作者：Hai-tao Huang ; Jing-liang He ; Xiu-wei Fan ; Yan Zhong ; Hong-liang Chai ; Yun Wang
• 关键词：Q-switched mode locking ; Gain-related effects ; Nd ; YVO₄
• 刊名：Optics and Laser Technology
• 出版年：2008
• 期刊代码：48_00303992
• 类别：ph
• 出版时间：September 2008
• 卷：40
• 期：6
• 页码：828-831
• 文件大小：401 K

摘要

Q-switched mode locking (QML) has been observed in acousto-optic Q-switched Nd:YVO₄ laser that contained no mode-locking components. It was found that QML was easily realized in a long cavity and the modulation depth was observed to increase with increased cavity length. The maximum modulation depth was as high as 90%. This phenomenon is explained by the introduction of gain-related effect in the gain medium. The longitudinal modes at higher frequency, than the central frequency of the gain profile, experience positive guiding, which results in mode locking of these modes.