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Broadband ultrashort pulse laser amplifier research

Author: HuangXiaoJun
Tutor: ZhangShuKui
School: Chinese Academy of Engineering Physics , Beijing Graduate School
Course: Nuclear Energy Science and Engineering
Keywords: Wideband ultrashort pulse laser Chirped pulse amplification CPA Regenerative amplifier and multi- pass amplification Optical parametric amplification OPA Optical parametric chirped pulse amplification OPCPA
CLC: TN241
Type: Master's thesis
Year: 2000
Downloads: 323
Quote: 4
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Abstract


Wideband ultrashort pulse amplification theoretical analysis and experimental research , the main contents are as follows : 1 . Review of the development process of ultrashort pulse generation and amplification , briefly introduced the the CPA latest technology developments . 2. Regenerative amplifier and multipass amplification of the theoretical analysis and numerical simulation , given the important relationship between the input pulse and the output pulse parameters ; discussed gain larger number of channels and pulse energy relationship between the flow of regenerative amplification and experimental study of multi- pass amplification of important guiding significance . 3. The enlarged theoretical model by means of chirped pulse transmission in the gain medium , the gain narrowing of ultrashort pulse amplification process , self-phase modulation and gain saturation effects theory and numerical study on how to control these effects for analyzed and discussed . 4. CPA system regenerative amplifier titanium gem and Experimental Study of the multi - pass amplifier , the overall gain of more than 10 ~ 7 , the output pulse energy of 20mJ enlarge the energy conversion efficiency of up to 20% ; given a new regenerated chamber photoelectric dynamic debugging . 5. Experimental Study of the reproducing amplifier and pre - amplifier of high gain neodymium glass , and glass laser apparatus for high - energy ultrashort pulse provides a useful system for the front end of the front end of the system output energy of up to 10 to 20mJ , gain over the 10 ~ 7 . Several important issues related with neodymium glass laser system were studied and discussed . 6. Numerical simulation of nonlinear three-wave coupled wave equations have a comprehensive understanding of the physical picture of the optical parametric amplification . The numerical simulation shows that the use of the existing nonlinear crystal and conventional pump source for optical parametric chirped pulse amplification , you can get the high - energy ultrashort pulse . The work is of great significance for the development and research of new ultrashort laser device .

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