在一个单信号共振的ZGP OPO OPO中,OAM控制的传输和中红外生成 (>4μm)
Optics express
|December 19, 2025
概括
研究人员在ZGP光学参数振荡器 (OPO) 中实现了轨道角动量 (OAM) 的选择性转移. 这种OPO产生高能束,使灵活的OAM控制和高效的中红外束生成成为可能.
科学领域:
- 非线性光学是非线性光学.
- 激光物理 激光物理
- 量子光学是一种量子光学.
背景情况:
- 光学参数振荡器 (OPO) 对于产生可调节的激光光是至关重要的.
- 带有轨道角动量 (OAM) 的束具有用于成像,通信和显微镜的独特特性.
- 在OPO中控制OAM传输对于高级光束生成至关重要.
研究的目的:
- 为了证明OAM在非对线ZGP OPO中选择性转移到信号或置状态.
- 为了实现高能中红外束生成与受控的OAM.
- 调查灵活主动OAM控制的方法,并提高波束质量.
主要方法:
- 使用一个非线性,单信号共振的ZGP光学参数振荡器 (OPO),由2.05μm的束送.
- 调整空腔长度和束倾斜,用于选择性OAM传输和控制.
- 实施了四个镜子环腔ZGP OPO,以提高波束的质量和稳定性.
主要成果:
- 通过调整空腔长度,实现了选择性OAM传输到信号或置状态.
- 对于信号和置,生成的输出能量超过1mJ.
- 通过在短空洞中调节束倾斜的弹性主动OAM控制.
- 在4.45μm时产生了~1mJ的第一阶旋置,M2因子接近2使用环腔.
- 获得了超过16%的光学到光学转换效率 (OOCE),可调性从4.3到5μm.
结论:
- 选择性OAM传输可以在非对线ZGPOPO中实现,可以控制束属性.
- 环腔设计显著提高了中红外波束质量和稳定性.
- 开发的ZGP OPO系统为各种应用提供高能束的高效,可调节的生成.
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