Full Spatiotemporal Measurement Techniques for Ultrashort Pulse Lasers
编号:201 访问权限:仅限参会人 更新:2026-04-29 14:22:24 浏览:2次 口头报告

报告开始:暂无开始时间(Asia/Shanghai)

报告时间:暂无持续时间

所在会场:[暂无会议] [暂无会议段]

暂无文件

摘要
Ultrashort pulsed lasers are widely used in scientific researches and applications due to their extremely short pulse duration and ultrahigh peak power. Full spatiotemporal field measurement of the ultrashort pulses is crucial for accurately understanding the spatiotemporal properties of the laser pulses and optimizing the laser output performance. Existing measurement techniques face the challenge of spatiotemporal single-shot measurements, and it is difficult to realize self-referencing with high-resolution measurements. To address above issues, we combined the advantages of spatio-spectral multiplexing and computational imaging to propose a self-referenced single-shot spatiotemporal measurement technique, and experimentally captured the multi-dimensional amplitude and phase information of an ultrashort pulse within a single frame, achieving femtosecond-scale temporal resolution, micron-scale spatial resolution, and 0.04 rad phase accuracy. Furthermore, a single-shot self-referenced spatiotemporal light field measurement method is proposed based on spatially multiplexed quadriwave lateral shearing interferometer wavefront sensing, and spatiotemporal optical vortex (STOV) light pulses were reconstructed experimentally. Finally, we combined the quadriwave lateral shearing interferometry and compressed sensing to propose a single-shot measurement technique for the spatiotemporal full-domain characterization of ultrashort pulses. This method offers the advantages of single-shot measurement, a wide spectral range, multiple spectral channels, and high phase accuracy. These methods exhibited strong applicability, a large dynamic range, and robust anti-interference capabilities, enabling accurate recovery of complex ultrashort pulse lasers, and they hold great potential for improving ultrashort pulse laser performance and advancing complex ultrafast laser interaction phenomena in a wide range of scientific and industrial applications.
关键词
高功率激光,超快测量,时空特性
报告人
Ping Zhu
Researcher Professor 中国科学院上海光学精密机械研究所

稿件作者
Ping Zhu 中国科学院上海光学精密机械研究所
发表评论
验证码 看不清楚,更换一张
全部评论
重要日期
  • 05月12日

    2026

    会议日期

  • 04月15日 2026

    初稿截稿日期

主办单位
等离子体物理全国重点实验室
厦门大学
历届会议
移动端
在手机上打开
小程序
打开微信小程序
客服
扫码或点此咨询