一种基于双边带调制的任意波形相干纳秒脉冲生成方案

An Arbitrary Waveform Coherent Nanosecond Pulse Generation Scheme Based on Double-Sideband Modulation

摘要: 纳秒脉冲可以应用于激光加工、激光雷达和光谱分析等不同的场景。通过传统的纳秒脉冲生成方案(如调Q激光和斩波器)得到的纳秒脉冲不具有相干性，且因为光栅工艺的限制，纳秒脉冲不能被整形成任意的波形。这限制了纳秒脉冲在需要精确控制的场景中的应用。为此，我们提出了一种通过并行马赫曾德尔调制器实现基于双边带调制的纳秒脉冲生成方案。这种纳秒脉冲具有相干性，且具有任意波形。我们的仿真结果展示了不同周期，不同波形的相干纳秒脉冲。

Abstract: Nanosecond pulses can be applied in various scenarios such as laser processing, LiDAR, and spectral analysis. Nanosecond pulses generated by traditional methods (such as Q-switched lasers and choppers) lack coherence and, due to limitations in grating technology, cannot be shaped into arbitrary waveforms. This restricts the application of nanosecond pulses in scenarios that require precise control. To address this, we propose a nanosecond pulse generation scheme based on double-sideband modulation, implemented through a parallel Mach-Zehnder modulator. These nanosecond pulses are coherent and can have arbitrary waveforms. Our simulation results demonstrate coherent nanosecond pulses with various waveforms.