对于FMCW-LiDAR进行连续的亚波动频率转换
Alexander Mrokon1, Johanna Oehler2, Ingo Breunig2,3
1Laboratory for Optical Systems, Department of Microsystems Engineering - IMTEK, University of Freiburg, Georges-Köhler-Allee 102, Freiburg, 79110, Germany. alexander.mrokon@imtek.uni-freiburg.de.
Scientific reports
|February 29, 2024
概括
我们开发了使用尼酸盐微振解器的电光驱动的离子变频器. 这些设备可以实现超快速的线性频率调,用于高级应用,如频率调制连续波 (FMCW) LiDAR.
科学领域:
- 光子学和光学工程 光子学和光学工程
- 材料科学 (酸) 材料科学 (酸)
- 应用物理 应用物理
背景情况:
- 激光器的连续频率调节对于各种应用至关重要,包括引力波探测,光学时钟和环境监测.
- 现有的方法在实现宽调节范围 (>100 GHz),微秒调节时间,线性和长连贯长度 (>10 m) 方面面临挑战.
研究的目的:
- 为了证明使用电光驱动的亚亚巴特式频率转换器进行超快速和线性频率调.
- 为了实现高级光学应用的高连贯度长度.
- 为了验证这些转换器在频率调制连续波 (FMCW) LiDAR 系统中的性能.
主要方法:
- 制造高Q微振荡器从酸.
- 使用电光调制来进行亚底波频率转换.
- 从任意电压信号中产生频率声,具有纳米秒时间分辨率.
- 描述产生的声的线性,调音范围和连贯长度.
主要成果:
- 对于频率声,实现了低于1μs的时间分辨率.
- 产生的200-ns频率声与<1%偏离线性.
- 已证明的一致性长度超过20米.
- 成功地应用了FMCW LiDAR中的线性频率扫描用于距离测量 (0.510 m).
结论:
- 电光驱动的附带式变频器提供超快速,线性和连贯的频率调.
- 这些转换器适用于要求精确和快速频率调制的应用,例如FMCW LiDAR.
- 该技术利用尼酸盐微振解器,在先进的光学系统中提供多功能性能.
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