可调节的反向太赫兹波参数振荡器,以0.87 THz的高频率为中心,注射播种
Optics express
|July 21, 2023
概括
我们展示了一种可调节的0.87 THz的反向特拉赫兹波参数振荡器 (BW-TPO),使用MGO合PPLN. 注射播种提高了效率和降低了值,显示THz输出依赖于种子功率.
科学领域:
- 非线性光学是一种非线性光学.
- 特拉赫兹 (THz) 光子学
- 固态激光技术 固态激光技术
背景情况:
- 太赫兹 (THz) 波的产生对于光谱和成像至关重要.
- 周期极化酸 (PPLN) 是用于频率转换的关键非线性材料.
- 逆向THz波参数振荡器 (BW-TPO) 为紧的THz源提供了潜在的潜力.
研究的目的:
- 为了展示第一个可调频的BW-TPO在高THz频率工作.
- 调查BW-TPO的性能特征,包括调范围,值和转换效率.
- 探索注射播种对BW-TPO性能的影响.
主要方法:
- 作为非线性介质,使用了一种斜条纹类型的MGO合PPLN晶体.
- 用1064.44nm脉冲激光源激发了PPLN,以产生THz和动波.
- 通过旋转 PPLN 晶体来实现频率调整的角度调整.
- 在置波长使用连续波 (CW) 激光进行了注射播种的研究.
主要成果:
- 实现了一个可调节的BW-TPO,以0.87 THz为中心,调节范围为0.8360.905 THz.
- 确定了5.6GW/cm2的门强度和12.3%的最大转换效率.
- 通过注射播种,证明了降低值能量和提高了通过注射播种提高了到灌器转换效率.
- 观察到THz输出功率与种子功率成正比.
结论:
- 通过使用MgO合PPLN成功证明了高频,可调节的BW-TPO.
- 注射播种是一种提高BW-TPO性能和效率的有效方法.
- 开发的BW-TPO显示出作为各种应用的多功能THz源的承诺.
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