超短光脉冲技术及应用研究.doc

超短光脉冲技术及应用研究
摘要:超短脉冲激光的最直接应用是人们利用它作为光源,形成多种时间分辨光谱技术和泵浦/探测技术。它的发展直接带动物理、化学、生物、材料与信息科学的研究进入微观超快过程领域,并开创了一些全新的研究领域,如:飞秒物理学、飞秒化学、飞秒生物学等,光频标、太赫兹产生、高次谐波产生、高时间分辨探测、超精细微结构加工和极端条件物理研究等。
本文在了解国内外研究现状的前提下,在理解短脉冲、超短脉冲的产生机理的条件下(调Q技术和各种锁模技术),融合了皮秒脉冲、飞秒脉冲、阿秒脉冲的各种测量方法,并对现在国内外比较热点的各种激光应用做了简略的介绍,尤其重点介绍了飞秒激光在激光加工、高能物理和核物理、生物医学方面的应用。
关键词:皮秒,飞秒,阿秒,调Q技术,锁模技术。
Ultrashort optical pulse technology and its application
Summary: The most direct application of ultrashort pulse laser is that people use it as a light source to form a variety of time-resolved spectroscopy and pump / probe technique. Its development led directly to the physical, chemical, biological, materials and information science research into the field of micro-ultra-fast process, and created some new research areas, such as: femtosecond physics, femtosecond chemistry, biology and so on femtosecond , optical frequency standard, terahertz generation, high harmonic generation, high time-resolved detection, ultra-fine micro-structure of the extreme conditions of processing and physical research.
In the premise of the research inside and outside, under the condition of understanding the generation mechanism of the short pulse, ultra-short pulse(Q-technique and a variety of clamping technology), this paper intergrates various measuring methods of the picosecond pulses, femtosecond pulses, attosecond pulses , and makes brief introduction of a variety of laser applications now at home and abroad , in particular, this paper highlights the femtosecond laser in the laser processing, high-energy physics and nuclear physics, bio-medical applications.
Keywords: Picosecond laser ,Femtosecond, Attosecond laser, Q-technique, Clamping technology.
目录
2
2
研究超短脉冲的意义 2
2. 超短脉冲激光的发展历程 4
5
4. 超短脉冲激光的产生 10
10
锁模的种类 13
主动锁模 13
被动锁模 14
同步泵浦锁模 14
光克尔透镜锁模(自锁模) 15
17
17
18
19
23
23