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基于光导半导体的MHz高重频可调谐脉冲产生技术研究

楚旭 王朗宁 朱效庆 王日品 王彬 荀涛 刘金亮

楚旭, 王朗宁, 朱效庆, 等. 基于光导半导体的MHz高重频可调谐脉冲产生技术研究[J]. 强激光与粒子束, 2022, 34: 075006. doi: 10.11884/HPLPB202234.210569
引用本文: 楚旭, 王朗宁, 朱效庆, 等. 基于光导半导体的MHz高重频可调谐脉冲产生技术研究[J]. 强激光与粒子束, 2022, 34: 075006. doi: 10.11884/HPLPB202234.210569
Chu Xu, Wang Langning, Zhu Xiaoqing, et al. Research on tunable pulse generation with MHz repetition rate based on compensated 4H-SiC photoconductive semiconductor[J]. High Power Laser and Particle Beams, 2022, 34: 075006. doi: 10.11884/HPLPB202234.210569
Citation: Chu Xu, Wang Langning, Zhu Xiaoqing, et al. Research on tunable pulse generation with MHz repetition rate based on compensated 4H-SiC photoconductive semiconductor[J]. High Power Laser and Particle Beams, 2022, 34: 075006. doi: 10.11884/HPLPB202234.210569

基于光导半导体的MHz高重频可调谐脉冲产生技术研究

doi: 10.11884/HPLPB202234.210569
基金项目: 国家自然科学基金项目(62071477,62101577);湖南省自然科学基金项目(2021JJ40660)
详细信息
    作者简介:

    楚 旭,15580957460@163.com

    通讯作者:

    荀 涛,xtao_0301@hotmail.com

    刘金亮,llle333@163.com

  • 中图分类号: TN78

Research on tunable pulse generation with MHz repetition rate based on compensated 4H-SiC photoconductive semiconductor

  • 摘要: 随着微波光子学的发展,新型光导微波技术利用高重频脉冲簇激光,入射到线性光导半导体器件中产生可调谐高功率电磁脉冲的方式受到广泛关注。SiC光导半导体开关(PCSS)具有高击穿场强,高饱和载流子速率,高抗辐射能力,高热传导率和高温工作稳定性等优点,是产生高重频、高功率、超短脉冲的重要固态电子器件。介绍了一种基于钒补偿半绝缘4H-SiC PCSS的MHz重复频率亚纳秒脉冲发生器。该发生器采用1 MHz,1030 nm可调谐光脉冲宽度的激光簇驱动源,4H-SiC PCSS的厚度为0.8 mm。整系统可得到最大输出电功率176 kW、最小半高宽约为365 ps的MHz重频短脉冲。
  • 图  1  4H-SiC光导半导体器件封装结构与CVR高频响应电流图

    Figure  1.  Insulated package structure of VCSI 4H-SiC PCSS device and circuit diagram of CVR high frequency response circuit

    图  2  光导开关器件电参数等效示意图

    Figure  2.  Circuit structure of VCSI4H-SiC PCSS

    图  3  4H-SiC光导器件光生载流子分布仿真(d=0.8 mm)

    Figure  3.  Photocurrent density simulation of 4H-SiC PCSS (d=0.8 mm)

    图  4  1 MHz超高重频光电流输出波形图

    Figure  4.  Output current of 4H-SiC PCSS at 1 MHz ultra-high re-frequency

    图  5  单脉冲响应波形图

    Figure  5.  Single photocurrent waveforms

    图  6  500 ps连续光脉冲波形与电路响应波形

    Figure  6.  Waveform of continuous laser pulse and output photocurrent for 500 ps laser triggering

    图  7  输出光电流与不同偏置电压/脉冲激光功率的关系

    Figure  7.  Output photocurrent varying with bias voltage and pulse laser power

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出版历程
  • 收稿日期:  2021-12-21
  • 修回日期:  2022-05-18
  • 网络出版日期:  2022-06-15
  • 刊出日期:  2022-05-12

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