工作功能的光学测量和金属针尖的场减小因子
Stefan Meier1, Jonas Heimerl1, Philip Dienstbier1
1Department of Physics, Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU), 91058 Erlangen, Germany. https://www.laserphysik.nat.fau.de/.
The Review of scientific instruments
|October 3, 2023
概括
我们开发了一种简单的现场方法,使用两个激光来测量电子源的工作功能和倾斜半径. 这项技术监测激光诱导的尖的变化,显示可逆性工作功能增加后的femtosecond激光脉冲.
科学领域:
- 材料科学 材料科学 材料科学
- 表面科学是一门学科.
- 物理 物理学 物理
背景情况:
- 基于针尖的电子源对于各种应用至关重要.
- 工作功能和尖端半径等关键参数影响电子发射.
- 激光触发的光辐射实验需要精确了解这些参数.
研究的目的:
- 介绍一个简单的现场方法来确定工作功能和尖端半径.
- 在激光诱导的光辐射实验期间监测发射器变化.
- 为了研究激光诱导的针尖的修改.
主要方法:
- 利用光辐射与两个连续波激光二极管进行现场测量.
- 将该技术应用于钢针尖.
- 监控工作功能的变化和电子排放分布.
主要成果:
- 在现场成功确定工作功能和尖端半径.
- 在秒激光脉冲照明后观察到工作功能的增加.
- 他指出,这些激光诱导的变化在场蒸发后是可逆的.
- 记录了空间电子发射分布的变化.
结论:
- 开发的方法提供了一种简单的方法来确定电子源的基本参数.
- 该技术允许在现场监测激光诱导的发射器修改.
- 这些发现适用于各种金属和实验设置.
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