超过3.8W,3.4μm皮秒的中红外线参数转换基于一个简化的一对多方案
Optics express
|March 5, 2024
概括
本研究提出了一种简化方法,用于高效的中红外 (MIR) 参数转换,使用连续波 (CW) 信号和皮秒脉冲. 这种新的方法实现了高平均置功率,简化了MIR源设计.
科学领域:
- 光学和光子学 在光学和光子学.
- 非线性光学是非线性光学.
- 激光物理 激光物理
背景情况:
- 参数转换对于产生中红外 (MIR) 频谱中的特定波长至关重要.
- 现有的方法通常涉及复杂的设置和同步的脉冲源,限制了效率和稳定性.
- 有效生成MIR辐射对于光谱,传感和成像中的应用至关重要.
研究的目的:
- 为了展示一个简化和高效的一对多方案中红外 (MIR) 参数转换.
- 在使用连续波 (CW) 信号源的波长大于3μm时实现高平均置功率.
- 为了提高MIR参数转换系统的稳定性和简化设计.
主要方法:
- 使用连续波 (CW) 单条纵向模式主振荡器功率放大器 (MOPA) 纤维系统作为信号源.
- 采用皮秒脉冲MOPA光纤系统 (多个纵向模式) 作为源.
- 将信号和束组合和配合成一个长50毫米的5%MgO合周期极化酸 (PPLN) 晶体,用于参数转换.
主要成果:
- 在~3.4μm的中心波长下,达到大约3.82W的平均置功率.
- 获得这些结果的启动和信号功率分别为~41.73W和~11.45W.
- 观察到机功率对信号功率的翻转效应,以及对功率的和效应,在值功率时的峰值效率.
结论:
- 展示的方案代表了一个单通参数转换源的最高平均功率,其动波长>3μm,并具有CW信号.
- 一对多功能通过降低波长灵敏度来简化准相匹配.
- 使用CW信号源消除了复杂时间同步的需要,使系统更强大,更适合应用.
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