| 紫外飞秒激光的脉宽测量方法 |
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| 引用本文： | 陈星,游利兵,尹广玥,方晓东.紫外飞秒激光的脉宽测量方法[J].激光技术,2019,43(2):205-211. |
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| 作者姓名： | 陈星 游利兵 尹广玥 方晓东 |
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| 作者单位： | 中国科学院 安徽光学精密机械研究所 安徽省光子器件与材料重点实验室,合肥 230031;中国科学技术大学 科学岛分院,合肥 230026;中国科学院 安徽光学精密机械研究所 安徽省光子器件与材料重点实验室,合肥,230031 |
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| 摘 要： | 相对于近红外波段的飞秒激光脉冲,紫外波段的飞秒脉冲由于具有单光子能量高、聚焦特性好、电离率高和成丝阈值低等优点,在高功率密度光场的产生、等离子体光物理等领域有着越来越广阔的应用前景,成为激光技术的研究热点。随着紫外飞秒激光技术的发展,传统的脉宽测量方法不能满足需求。指出了紫外飞秒激光脉宽测量研究的主要进展,讨论了目前可用于紫外飞秒激光脉宽的测量方法,主要有双光子荧光测量法、互相关法、简并四波混频法、多光子电离法,介绍了相关测量原理与特点。在此基础上,对紫外飞秒激光脉宽测量技术研究前景进行了展望。
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| 关 键 词： | 激光技术 紫外飞秒脉冲 互相关法 多光子电离法 双光子荧光法 脉宽测量 |
| 收稿时间： | 2018-05-22 |
Pulse width measurement of UV femtosecond laser |
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| CHEN Xing,YOU Libing,YIN Guangyue,FANG Xiaodong.Pulse width measurement of UV femtosecond laser[J].Laser Technology,2019,43(2):205-211. |
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| Authors: | CHEN Xing YOU Libing YIN Guangyue FANG Xiaodong |
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| Affiliation: | (Anhui Province Key Laboratory of Photonic Devices and Materials, Anhui Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Hefei 230031, China;School of Science Island,University of Science and Technology of China, Hefei 230026, China) |
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| Abstract: | Compared with femtosecond laser pulses in the near-infrared region, femtosecond pulses in the ultraviolet region have the advantages of high single-photon energy, good focusing property, high ionization rate and low filament threshold value.It has broad application prospects in the production of high power density optical field and the field of plasma photophysics.Femtosecond pulses in the ultraviolet region have become a hot spot of laser technology.With the development of ultraviolet femtosecond laser technology, the traditional pulse width measurement method cannot meet the demand.The main advances in the study on pulse width measurement of ultraviolet femtosecond lasers are pointed out.The measurement methods currently available for ultraviolet (UV) femtosecond laser pulse width are discussed, mainly including two-photon fluorescence measurement, cross-correlation method, degenerate four-wave mixing method, multiphoton ionization method.The relevant easurement principles and characteristics are introduced.Based on the research, the research prospects of the ultraviolet femtosecond laser pulse width measurement technology are prospected. |
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| Keywords: | laser technique ultraviolet femtosecond pulse cross correlation method multi-photon ionization method two-photon fluorescence method pulse width measurement |
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