红外飞秒超短脉冲激光的产生与测量研究
文献类型：学位论文
| 作者 | 王建良 |
| 学位类别 | 硕士 |
| 答辩日期 | 2009 |
| 授予单位 | 中国科学院上海光学精密机械研究所 |
| 导师 | 冷雨欣 |
| 关键词 | 光学参量放大 红外飞秒激光脉冲 载波包络相位 干涉自相关仪 |
| 其他题名 | Generation and measurement of infrared femtosecond laser pulse |
| 中文摘要 | 1985年啁啾脉冲放大技术的发明和1991年钛宝石自锁模激光器的诞生奠定了当今超短超强激光技术的基础。超短超强激光为众多学科领域提供了前所未有的实验手段和极端物理条件，同时各个应用领域又对超短超强激光的脉宽、峰值功率、工作波长等性能指标提出越来越高的要求。因此人类追求超短脉冲宽度、超强峰值功率和新波段激光脉冲的脚步一刻没有停歇。其中，红外飞秒超短脉冲激光在此背景下应运而生。 在飞秒光学研究中，脉冲特性测量技术研究是非常重要的一部分。脉冲特性的正确测量不仅有助于产生更短的脉冲和脉冲整形，而且测量和控制脉冲的相位还有助于高次谐波和阿秒脉冲的产生等超短激光脉冲应用研究，因而研究新波段可调谐红外飞秒超短脉冲的参数测量具有极其重要的意义。 本论文的工作主要研究红外飞秒超短激光脉冲的产生与测量。主要集中在以下几个方面： 1、参与建造了一套波长可调谐毫焦耳量级红外飞秒超短激光脉冲光参量放大系统。通过光参量过程，产生了波长可调谐的新波段红外超短脉冲，利用差频效应，实现被动载波包络相位稳定。最终获得了波长可调谐范围为1.3~2.3 m，载波包络相位稳定的红外超短激光脉冲输出。当工作激光脉冲中心波长为1.6 m，在泵浦源为6mJ/1kHz/35fs时，最高输出载波包络相位稳定的超短激光脉冲能量>1mJ/36fs。 2、设计并创建了双光路红外飞秒激光脉冲载波包络相移测量系统。利用f-to-2f技术实现了对可调谐红外超短脉冲的载波包络相移的测量。测试结果表明，和单光路系统相比，双光路系统测量方便，易于调节，尤其适合新波段红外波长可调谐系统的测量。 3、设计了一套以光电二极管为基础的可测量超宽带红外飞秒激光脉冲的干涉自相关仪（IAC）。测量系统设计紧凑，且能够测量更宽光谱范围的红外超短脉冲。应用PICASO方法和遗传算法实现脉冲重构，可以准确地测量红外超短脉冲的脉宽和相位信息。 |
| 英文摘要 | The generation of Chirped Pulse Amplification (CPA) technique in 1985 and the birth of self-mode-lock Ti:sapphire laser in 1991 push the development of ultrashort and ultraintense laser. Such kinds of laser are valuable for a variety of high-field applications, and the applications make more requirements in the technological specification of laser system, such as the pulse duration, peak power and the working wavelength. So seeking for ultrashort, ultraintense, new wavelength range laser has never ceased. Therefore, the infrared femtosecond laser pulse has been developed. In the field of femtosecond optics, the research about the techniques to measure the characteristics of ultrafast pulses is very important. Not only the accurate measurement of the characteristics of ultrashort pulse is facility to produce shorter pulses and pulse shaping, but aslo the accurate measurement and control of the pulse phase will help to research the ultrashort pulse application, such as the high harmonic generation and the attosecond pulse generation. Therefore, the measurment of the characteristics of tunable ultrafast pulse is a very important work. The work of this thesis aims at the production and measurement of infrared femtosecond laser pulse. The main works in the thesis can be summarized as follows: 1. Participating in building a tunable phase-stabilized infrared femtosecond mJ-level optical parametric amplifier (OPA) system. The tunable infrared femtosecond laser pulse could be achieved by the OPA progress. Because of the difference frequency generation (DFG), the carrier-envelope phase (CEP) of the pulse is passively stabilized. The pulses are tunable from 1.3 m to 2.3 m. when the input pulse is 6mJ/1kHz/35fs, the maximum output energy is >1mJ/36fs at 1.6 m. 2. A two-path interferometer system to measure the infrared femtosecond laser pulse CEP stability has been designed and built. In experiment, we measure the CEP of infrared femtosecond laser pulse with the two-path f-to-2f interferometer. The experiment results indicate that the two-path f-to-2f interferometer operates easily and quickly in measuring the CEP stability, especially that it is suitable to the measurement of the wavelength-tunable system, comparing to the single-path interferometer. 3. An interfeometric autocorrelator in foundation of optoelectronic diode has been desgined to measure ultraband femtosecond laser pulse. This design is compact and could measure ultrashort laser pulse with much broader spectrum. For pulse reconstruction, we could get the pulse duration and phase of the laser pulse with the PICASO method and generic algorithm. |
| 语种 | 中文 |
| 源URL | [http://ir.siom.ac.cn/handle/181231/16421]  |
| 专题 | 上海光学精密机械研究所_学位论文 |
| 推荐引用方式 GB/T 7714 | 王建良. 红外飞秒超短脉冲激光的产生与测量研究[D]. 中国科学院上海光学精密机械研究所. 2009. |
入库方式： OAI收割
来源：上海光学精密机械研究所
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