概括
我们稳定了一个3.4THz量子级联激光器.
科学领域:
- 量子级联激光器的特拉赫兹 (THz) 是量子级联激光器的特拉赫兹 (THz).
- 综合光子学 综合光子学
- 光电子器件是指光电子设备.
背景情况:
- 量子级联激光器 (QCL) 对THz应用至关重要.
- 功率漂移和频率波动限制了QCL的稳定性.
- 精确控制THz辐射对于光谱学和成像学至关重要.
研究的目的:
- 展示一种新的光子集成电路 (PIC) 用于稳定 THz 量子级联激光辐射.
- 为了实现动态功率控制和长期频率锁定.
- 探索激光功率和频率的同时,准独立的控制.
主要方法:
- 使用了一个PIC,包括一个赛道共振器与一个峰波导相结合.
- 实现了一种比例整体控制循环来稳定功率.
- 研究了共振器对激光发射频率扰动的影响.
- 展示了PIC与微加工金属波导模块的集成.
主要成果:
- 实现了动态功率控制,范围为±15%.
- 在600多秒的时间里,表现出稳定的激光锁定.
- 观察到与直接调制相比,激光频率的扰动幅度降低了50%.
- 在与集成模块脉冲运行期间,激光发射线的功率调制得到确认.
结论:
- 开发的PIC结构有效地稳定了THz量子级联激光辐射,防止电力漂移.
- 振荡器-波导合器为激光功率和频率的同时,近乎独立的控制提供了一条途径.
- 进一步与金属波导相集成显示出对先进THz系统开发的前景.
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