两个mJ级,高能完全被动的KGW/Tm:YLF拉曼激光

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概括

这项研究表明,在2微米范围内的被动KGW拉曼激光器创下了新纪录,使用刺激的拉曼散射实现了每脉冲超过2mJ的能量和高转换效率.

科学领域:

激光物理激光物理
非线性光学是非线性光学.
材料科学材料科学材料科学

背景情况:

在2微米光谱范围内开发高效的激光器对于各种应用至关重要.
刺激拉曼散射 (SRS) 提供了一种途径,可以从现有的激光源生成新的波长.
全被动配置是理想的简单性和稳健性.

研究的目的:

开发和描述一个完全被动的外腔KGW拉曼激光器,在2微米光谱范围内运行.
为了在这个光谱区域中实现SRS每脉冲能量和转换效率的创纪录.
为了研究KGW晶体在被动拉曼激光设置中的性能.

主要方法:

使用Tm:YLF激光在1879.5nm运行作为源.
采用完全被动的外部腔设计,其中包含KGW (KY3(WO4)2) 晶体.
研究刺激拉曼散射,以在更长的波长产生输出.

主要成果:

该KGW拉曼激光器成功发射了2197nm和2263nm的两条线.
这两条线路的最大能量输出分别为1.86mJ和2.08mJ.
记录了40%和45.3%的最大转换效率,为这种配置创造了新的记录.

结论:

开发的完全被动的KGW拉曼激光器代表了在2微米波长生成方面取得的重大进展.
取得的性能超过了每脉冲能量和2微米范围内的被动拉曼激光器转换效率的先前记录.
这项工作突出了KGW晶体在高性能SRS应用中的潜力.

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